Heterocycle amines and uses thereof

ABSTRACT

Compounds and methods in the fields of chemistry and medicine are disclosed. Some of the disclosed embodiments include compounds, compositions and methods of using heterocycle amines. Some of the disclosed embodiments include heterocycle amines useful to treat inflammatory disorders.

RELATED APPLICATIONS

This application is a continuation of U.S. application Ser. No. 16/735,988 filed Jan. 7, 2020 which is a continuation of U.S. application Ser. No. 16/015,925 filed Jun. 22, 2018 now U.S. Pat. No. 10,604,533 issued Mar. 31, 2020 which is a continuation of U.S. application Ser. No. 15/006,940 filed Jan. 26, 2016 now U.S. Pat. No. 10,030,034 issued Jul. 24, 2018 which is a continuation of U.S. application Ser. No. 14/137,318 filed Dec. 20, 2013 now U.S. Pat. No. 9,266,874 which issued Feb. 23, 2016 which is a continuation of U.S. application Ser. No. 13/885,138 filed May 13, 2013 now abandoned which is the U.S. National Phase of App. No. PCT/US2011/061532 entitled “HETEROCYCLE AMINES AND USES THEREOF” filed Nov. 18, 2011 and published in English on May 24, 2012 as WO2012/068546 which claims the benefit of U.S. Prov. App. No. 61/415,685 filed Nov. 19, 2010 entitled “HETEROCYCLE AMINES AND USES THEREOF” which are each incorporated herein by reference in its entirety.

FIELD OF THE INVENTION

Compounds and methods in the fields of chemistry and medicine are disclosed. Some of the disclosed embodiments include compounds, compositions and methods of using heterocycle amines. Some of the disclosed embodiments include heterocycle amines useful to treat inflammatory disorders.

BACKGROUND

The recruitment of immune cells to sites of injury involves the concerted interactions of a large number of soluble mediators. Several cytokines appear to play roles in these processes, for example, IL-1 and TNF. Both cytokines are derived from mononuclear cells and macrophages along with other cell types. Physiologically, they produce many of the same proinflammatory responses, including fever, sleep, anorexia, mobilization and activation of polymorphonuclear leukocytes, induction of cyclooxygenase and lipoxygenase enzymes, increase in adhesion molecule expression, activation of B-cells, T-cells and natural killer cells, and stimulation of production of other cytokines. Other actions include a contribution to the tissue degeneration seen in chronic inflammatory conditions, such as stimulation of fibroblast proliferation, induction of collagenase, etc. They have also been implicated in the process of bone resorption and adipose tissue regulation. Thus, these cytokines play key roles in a large number of pathological conditions, including rheumatoid arthritis, inflammatory bowel disease, multiple sclerosis, diabetes, obesity, cancer, and sepsis.

The role of IL-1 in inflammation has been demonstrated by the ability of the highly specific IL-1 receptor antagonist protein (IL-1 Ra, or IRAP) to relieve inflammatory conditions. IL-1 treatment of cells induces the formation of a complex consisting of the two IL-1 receptor chains, IL-IRI and IL-1 RAcP, and the resulting heterodimer recruits an adaptor molecule designated as MyD88. MyD88 binds to a protein designated IRAK (Interleukin-1 Receptor-Associated Kinase). IRAK is subsequently phosphorylated and released from the receptor complex to interact with a tumor necrosis factor receptor-associated factor, TRAF6, which transduces the signal to downstream effector molecules. TRAF6 can trigger the NIK/IKK kinase cascade to activate the transcription factor NF-κB. NF-κB regulates a number of genes that, in turn, regulate immune and inflammatory responses.

Four IRAKs have been identified: IRAK-1, IRAK-2, the monomyeloic cell-specific IRAK-M, also known as IRAK-3, and IRAK-4. IRAK proteins have been shown to play a role in transducing signals other than those originating from IL-I receptors, including signals triggered by activation of IL-18 receptors and LPS receptors. Overexpression of IRAK-2 and IRAK-M has been shown to be capable of reconstituting the response to IL-1 and LPS in an IRAK deficient cell line.

SUMMARY OF THE INVENTION

Compounds, compositions and methods of using heterocycle amines are disclosed. Some of the disclosed embodiments include heterocycle amines useful to treat inflammatory disorders.

Some embodiments include a compound of Formula (I):

-   -   or a salt, ester, amide, or prodrug thereof,     -   wherein     -   is a single or double bond;     -   W is selected from CH, CH—CH, O, S, NR⁶, and CO;     -   Y is N or CR⁹;     -   Z is N or C, and Z is N if W is CH and Y is CR⁹;     -   R⁴ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         an optionally substituted aryl, an optionally substituted         heteroaryl, an optionally substituted non-aromatic ring, an         optionally substituted carbocycle, an optionally substituted         C₁-C₆ alkyl, an optionally substituted C₁-C₆ haloalkyl, an         optionally substituted C₁-C₆ heteroalkyl, an optionally         substituted C₁-C₆ alkenyl, an optionally substituted C₁-C₆         alkynyl, CO₂R⁶, SO₃R⁶, SO₂R⁶ and SO₂NR⁷R⁸;     -   R⁵ is selected from hydrogen, halogen, OR⁶, an optionally         substituted C₁-C₆ alkyl, an optionally substituted C₁-C₆         haloalkyl, an optionally substituted C₁-C₆ heteroalkyl, an         optionally substituted C₁-C₆ haloheteroalkyl, an optionally         substituted C₁-C₆ alkenyl, and an optionally substituted C₁-C₆         alkynyl;     -   or R⁴ and R⁵ are linked to form an optionally substituted         non-aromatic ring;     -   each R⁶ is independently selected from an optionally substituted         aryl, an optionally substituted heteroaryl, and an optionally         substituted non-aromatic ring, each optionally fused with a         substituted aryl or a substituted heteroaryl, hydrogen, an         optionally substituted C₁-C₁₀ alkyl, an optionally substituted         C₁-C₁₀ haloalkyl, and an optionally substituted C₁-C₁₀         heteroalkyl;     -   each R⁷ and R⁸ is independently selected from an optionally         substituted aryl, an optionally substituted heteroaryl, an         optionally substituted non-aromatic ring, each optionally fused         with a substituted aryl or a substituted heteroaryl, hydrogen,         an optionally substituted C₁-C₁₀ alkyl, an optionally         substituted C₁-C₁₀ haloalkyl, an optionally substituted C₁-C₁₀         alkenyl, an optionally substituted C₁-C₁₀ alkynyl, and an         optionally substituted C₁-C₁₀ heteroalkyl, or R⁷ and R⁸ are         linked to form an optionally substituted non-aromatic ring;     -   R⁹ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         an optionally substituted aryl, an optionally substituted         heteroaryl, an optionally substituted non-aromatic ring, an         optionally substituted C₁-C₆ alkyl, an optionally substituted         C₁-C₆ haloalkyl, an optionally substituted C₁-C₆ heteroalkyl, an         optionally substituted C₁-C₆ alkenyl, an optionally substituted         C₁-C₆ alkynyl, CO₂R⁶, SO₃R⁶, and SO₂NR⁷R⁸;     -   A is an optionally substituted aryl or an optionally substituted         heteroaryl group;     -   each optionally substituted group is either unsubstituted or         substituted with one or more groups independently selected from         alkyl, heteroalkyl, alkenyl, alkynyl, haloalkyl,         heterohaloalkyl, aryl, arylalkyl, heteroaryl, non-aromatic ring,         hydroxy, alkoxy, aryloxy, mercapto, alkylthio, arylthio, cyano,         halo, carbonyl, thiocarbonyl, O-carbamyl, N-carbamyl,         O-thiocarbamyl, N-thiocarbamyl, C-amido, N-amido, S-sulfonamido,         N-sulfonamido, C-carboxy, O-carboxy, isocyanato, thiocyanato,         isothiocyanato, nitro, silyl, trihalomethanesulfonyl, ═O, ═S,         amino, and protected derivatives of amino groups.

In some embodiments, R⁴ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶, an optionally substituted aryl, an optionally substituted heteroaryl, an optionally substituted non-aromatic ring, an optionally substituted carbocycle, an optionally substituted C₁-C₆ alkyl, an optionally substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆ heteroalkyl, an optionally substituted C₁-C₆ alkenyl, an optionally substituted C₁-C₆ alkynyl, CO₂R⁶, SO₃R⁶, SO₂R⁶ and SO₂NR⁷R⁸.

In some embodiments, if R⁴ is pyrazolyl, the pyrazolyl is not substituted with aryl or heteroaryl groups.

In some embodiments, if R⁴ is oxazolyl, isoxazolyl, or imidazoyl, the oxazolyl, isoxazolyl, or imidazoyl radical is not substituted with aryl or heteroaryl groups.

Some embodiments include a compound represented by Formula (I-A):

-   -   or a salt, ester, amide, or prodrug thereof,     -   wherein     -   X is N or CR⁵′, wherein R⁵′ is selected from hydrogen, halogen,         OR⁶, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         heteroalkyl, an optionally substituted C₁-C₆ haloheteroalkyl, an         optionally substituted C₁-C₆ alkenyl, and an optionally         substituted C₁-C₆ alkynyl;     -   R¹ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         CH₂NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         alkenyl, an optionally substituted C₁-C₆ alkynyl, an optionally         substituted C₁-C₆ heteroalkyl, CO₂R⁶, CONR⁷R⁸, SO₃R⁶, and         SO₂NR⁷R⁸;     -   R² and R³ are independently selected from hydrogen, halogen,         OR⁶, NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         alkenyl, an optionally substituted C₁-C₆ alkynyl, and an         optionally substituted C₁-C₆ heteroalkyl.

Some embodiments include a compound represented by Formula (II):

-   -   or a salt, ester, amide, or prodrug thereof.

Some embodiments include a compound represented by Formula (III):

-   -   or a salt, ester, amide, or prodrug thereof,     -   wherein     -   X is N or CR⁵′, wherein R⁵′ is selected from hydrogen, halogen,         OR⁶, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         heteroalkyl, an optionally substituted C₁-C₆ haloheteroalkyl, an         optionally substituted C₁-C₆ alkenyl, and an optionally         substituted C₁-C₆ alkynyl;     -   R¹ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         CH₂NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         alkenyl, an optionally substituted C₁-C₆ alkynyl, an optionally         substituted C₁-C₆ heteroalkyl, CO₂R⁶, CONR⁷R⁸, SO₃R⁶, and         SO₂NR⁷R⁸;     -   R² and R³ are independently selected from hydrogen, halogen,         OR⁶, NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         alkenyl, an optionally substituted C₁-C₆ alkynyl, and an         optionally substituted C₁-C₆ heteroalkyl.

In some embodiments, W is S.

In some embodiments, X is N.

In some embodiments, Y is CR⁹.

In some embodiments, R⁴ is selected from the group consisting of pyridyl, pyrazolyl, cyano, triazolyl, and oxazolyl.

In some embodiments, Y is N.

In some embodiments, R⁴ is selected from the group consisting of pyridyl, pyrazolyl, pyrimidinyl, pyridazinyl, and C₁-C₆ alkyl.

Some embodiments include a compound represented by Formula (IV):

or a salt, ester, amide, or prodrug thereof,

wherein:

X is N or CR⁵′, wherein R⁵′ is selected from hydrogen, halogen, OR⁶, an optionally substituted C₁-C₆ alkyl, an optionally substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆ heteroalkyl, an optionally substituted C₁-C₆ haloheteroalkyl, an optionally substituted C₁-C₆ alkenyl, and an optionally substituted C₁-C₆ alkynyl;

R¹ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶, CH₂NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆ alkenyl, an optionally substituted C₁-C₆ alkynyl, an optionally substituted C₁-C₆ heteroalkyl, CO₂R⁶, CONR⁷R⁸, SO₃R⁶, and SO₂NR⁷R⁸; and

R² and R³ are independently selected from hydrogen, halogen, OR⁶, NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆ alkenyl, an optionally substituted C₁-C₆ alkynyl, and an optionally substituted C₁-C₆ heteroalkyl.

In some embodiments, X is N.

Some embodiments include a pharmaceutical composition comprising a compound provided herein and a pharmaceutically acceptable carrier.

Some embodiments include a method of treating a disorder responsive to inhibition of Interleukin-1 Receptor-Associated Kinase-mediated signal transduction comprising administering to a subject in need thereof an effective amount of a compound provided herein.

In some embodiments, the disorder is an inflammatory disorder. In some embodiments, the inflammatory disorder is selected from the group consisting of osteoarthritis, rheumatoid arthritis, multiple sclerosis, corneal ulcers, uveitis, and inflammatory bowel disease.

In some embodiments, the disorder is a skin disorder. In some embodiments, the skin disorder is selected from the group consisting of dermatitis, cutaneous eosinophilias, Lichen planus, urticaria, psoriasis, pruritus, angioedemas, chronic skin ulcers, conjunctivitis, vasculitides, and erythemas.

In some embodiments, the disorder is a respiratory disorder. In some embodiments, the respiratory disorder is selected from the group consisting of asthma, rhinitis, chronic obstructive pulmonary disease, bronchitis, nasal polyposis, nasal congestion, farmer's lung, fibroid lung and cough.

In some embodiments, the disorder is selected from the group consisting of diabetes, obesity, allergic disease, cancer, and sepsis.

Some embodiments include use of a compound provided herein in the preparation of a medicament for treating a disorder responsive to inhibition of Interleukin-1 Receptor-Associated Kinase-mediated signal transduction.

In some embodiments, the disorder is an inflammatory disorder. In some embodiments, the inflammatory disorder is selected from the group consisting of osteoarthritis, rheumatoid arthritis, multiple sclerosis, corneal ulcers, uveitis, and inflammatory bowel disease.

In some embodiments, the disorder is a skin disorder. In some embodiments, the skin disorder is selected from the group consisting of dermatitis, cutaneous eosinophilias, Lichen planus, urticaria, psoriasis, pruritus, angioedemas, chronic skin ulcers, conjunctivitis, vasculitides, and erythemas.

In some embodiments, the disorder is a respiratory disorder. In some embodiments, the respiratory disorder is selected from the group consisting of asthma, rhinitis, chronic obstructive pulmonary disease, bronchitis, nasal polyposis, nasal congestion, farmer's lung, fibroid lung and cough.

In some embodiments, the disorder is selected from the group consisting of diabetes, obesity, allergic disease, cancer, and sepsis.

Some embodiments include a compound provided herein for treating a disorder responsive to inhibition of Interleukin-1 Receptor-Associated Kinase-mediated signal transduction.

In some embodiments, the disorder is an inflammatory disorder. In some embodiments, the inflammatory disorder is selected from the group consisting of osteoarthritis, rheumatoid arthritis, multiple sclerosis, corneal ulcers, uveitis, and inflammatory bowel disease.

In some embodiments, the disorder is a skin disorder. In some embodiments, the skin disorder is selected from the group consisting of dermatitis, cutaneous eosinophilias, Lichen planus, urticaria, psoriasis, pruritus, angioedemas, chronic skin ulcers, conjunctivitis, vasculitides, and erythemas.

In some embodiments, the disorder is a respiratory disorder. In some embodiments, the respiratory disorder is selected from the group consisting of asthma, rhinitis, chronic obstructive pulmonary disease, bronchitis, nasal polyposis, nasal congestion, farmer's lung, fibroid lung and cough.

In some embodiments, the disorder is selected from the group consisting of diabetes, obesity, allergic disease, cancer, and sepsis.

DETAILED DESCRIPTION

Compounds and methods in the fields of chemistry and medicine are disclosed. Some of the disclosed embodiments include compounds, compositions and methods of using heterocycle amines. Some of the disclosed embodiments include heterocycle amines useful to treat inflammatory disorders.

Some embodiments include a compound of Formula (I):

-   -   or a salt, ester, amide, or prodrug thereof,     -   wherein     -   is a single or double bond;     -   W is selected from CH, CH—CH, O, S, NR⁶, and CO;     -   Y is N or CR⁹; p Z is N or C, and Z is N if W is CH and Y is         CR⁹;     -   R⁴ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         an optionally substituted aryl, an optionally substituted         heteroaryl, an optionally substituted non-aromatic ring, an         optionally substituted carbocycle, an optionally substituted         C₁-C₆ alkyl, an optionally substituted C₁-C₆ haloalkyl, an         optionally substituted C₁-C₆ heteroalkyl, an optionally         substituted C₁-C₆ alkenyl, an optionally substituted C₁-C₆         alkynyl, CO₂R⁶, SO₃R⁶, SO₂R⁶ and SO₂NR⁷R⁸;     -   R⁵ is selected from hydrogen, halogen, OR⁶, an optionally         substituted C₁-C₆ alkyl, an optionally substituted C₁-C₆         haloalkyl, an optionally substituted C₁-C₆ heteroalkyl, an         optionally substituted C₁-C₆ haloheteroalkyl, an optionally         substituted C₁-C₆ alkenyl, and an optionally substituted C₁-C₆         alkynyl;     -   or R⁴ and R⁵ are linked to form an optionally substituted         non-aromatic ring;     -   each R⁶ is independently selected from an optionally substituted         aryl, an optionally substituted heteroaryl, and an optionally         substituted non-aromatic ring, each optionally fused with a         substituted aryl or a substituted heteroaryl, hydrogen, an         optionally substituted C₁-C₁₀ alkyl, an optionally substituted         C₁-C₁₀ haloalkyl, and an optionally substituted C₁-C₁₀         heteroalkyl;     -   each R⁷ and R⁸ is independently selected from an optionally         substituted aryl, an optionally substituted heteroaryl, an         optionally substituted non-aromatic ring, each optionally fused         with a substituted aryl or a substituted heteroaryl, hydrogen,         an optionally substituted C₁-C₁₀ alkyl, an optionally         substituted C₁-C₁₀ haloalkyl, an optionally substituted C₁-C₁₀         alkenyl, an optionally substituted C₁-C₁₀ alkynyl, and an         optionally substituted C₁-C₁₀ heteroalkyl, or R⁷ and R⁸ are         linked to form an optionally substituted non-aromatic ring;     -   R⁹ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         an optionally substituted aryl, an optionally substituted         heteroaryl, an optionally substituted non-aromatic ring, an         optionally substituted C₁-C₆ alkyl, an optionally substituted         C₁-C₆ haloalkyl, an optionally substituted C₁-C₆ heteroalkyl, an         optionally substituted C₁-C₆ alkenyl, an optionally substituted         C₁-C₆ alkynyl, CO₂R⁶, SO₃R⁶, and SO₂NR⁷R⁸;     -   A is an optionally substituted aryl or an optionally substituted         heteroaryl group;     -   each optionally substituted group is either unsubstituted or         substituted with one or more groups independently selected from         alkyl, heteroalkyl, alkenyl, alkynyl, haloalkyl,         heterohaloalkyl, aryl, arylalkyl, heteroaryl, non-aromatic ring,         hydroxy, alkoxy, aryloxy, mercapto, alkylthio, arylthio, cyano,         halo, carbonyl, thiocarbonyl, O-carbamyl, N-carbamyl,         O-thiocarbamyl, N-thiocarbamyl, C-amido, N-amido, S-sulfonamido,         N-sulfonamido, C-carboxy, O-carboxy, isocyanato, thiocyanato,         isothiocyanato, nitro, silyl, trihalomethanesulfonyl, ═O, ═S,         amino, and protected derivatives of amino groups.

In some embodiments, R⁴ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶, an optionally substituted aryl, an optionally substituted heteroaryl, an optionally substituted non-aromatic ring, an optionally substituted carbocycle, an optionally substituted C₁-C₆ alkyl, an optionally substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆ heteroalkyl, an optionally substituted C₁-C₆ alkenyl, an optionally substituted C₁-C₆ alkynyl, CO₂R⁶, SO₃R⁶, SO₂R⁶ and SO₂NR⁷R⁸.

In some embodiments, if R⁴ is pyrazolyl, the pyrazolyl is not substituted with aryl or heteroaryl groups.

In some embodiments, if R⁴ is oxazolyl, isoxazolyl, or imidazoyl, the oxazolyl, isoxazolyl, or imidazoyl radical is not substituted with aryl or heteroaryl groups.

Some embodiments include a compound represented by Formula (I-A):

-   -   or a salt, ester, amide, or prodrug thereof,     -   wherein     -   X is N or CR⁵′, wherein R⁵′ is selected from hydrogen, halogen,         OR⁶, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         heteroalkyl, an optionally substituted C₁-C₆ haloheteroalkyl, an         optionally substituted C₁-C₆ alkenyl, and an optionally         substituted C₁-C₆ alkynyl;     -   R¹ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         CH₂NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         alkenyl, an optionally substituted C₁-C₆ alkynyl, an optionally         substituted C₁-C₆ heteroalkyl, CO₂R⁶, CONR⁷R⁸, SO₃R⁶, and         SO₂NR⁷R⁸;     -   R² and R³ are independently selected from hydrogen, halogen,         OR⁶, NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         alkenyl, an optionally substituted C₁-C₆ alkynyl, and an         optionally substituted C₁-C₆ heteroalkyl.

Some embodiments include a compound represented by Formula (II):

-   -   or a salt, ester, amide, or prodrug thereof.

Some embodiments include a compound represented by Formula (III):

-   -   or a salt, ester, amide, or prodrug thereof,     -   wherein     -   X is N or CR⁵′, wherein R⁵′ is selected from hydrogen, halogen,         OR⁶, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         heteroalkyl, an optionally substituted C₁-C₆ haloheteroalkyl, an         optionally substituted C₁-C₆ alkenyl, and an optionally         substituted C₁-C₆ alkynyl;     -   R¹ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         CH₂NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         alkenyl, an optionally substituted C₁-C₆ alkynyl, an optionally         substituted C₁-C₆ heteroalkyl, CO₂R⁶, CONR⁷R⁸, SO₃R⁶, and         SO₂NR⁷R⁸;     -   R² and R³ are independently selected from hydrogen, halogen,         OR⁶, NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         alkenyl, an optionally substituted C₁-C₆ alkynyl, and an         optionally substituted C₁-C₆ heteroalkyl.

In some embodiments, W is S.

In some embodiments, X is N.

In some embodiments, Y is CR⁹.

In some embodiments, R⁴ is selected from the group consisting of pyridyl, pyrazolyl, cyano, triazolyl, and oxazolyl.

In some embodiments, Y is N.

In some embodiments, R⁴ is selected from the group consisting of pyridyl, pyrazolyl, pyrimidinyl, pyridazinyl, and C₁-C₆ alkyl.

Some embodiments include a compound represented by Formula (IV):

-   -   or a salt, ester, amide, or prodrug thereof,     -   wherein:     -   X is N or CR⁵′, wherein R⁵′ is selected from hydrogen, halogen,         OR⁶, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         heteroalkyl, an optionally substituted C₁-C₆ haloheteroalkyl, an         optionally substituted C₁-C₆ alkenyl, and an optionally         substituted C₁-C₆ alkynyl;     -   R¹ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         CH₂NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         alkenyl, an optionally substituted C₁-C₆ alkynyl, an optionally         substituted C₁-C₆ heteroalkyl, CO₂R⁶, CONR⁷R⁸, SO₃R⁶, and         SO₂NR⁷R⁸; and     -   R² and R³ are independently selected from hydrogen, halogen,         OR⁶, NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         alkenyl, an optionally substituted C₁-C₆ alkynyl, and an         optionally substituted C₁-C₆ heteroalkyl.

In some embodiments, X is N.

Definitions

Unless specific definitions are provided, the nomenclatures utilized in connection with, and the laboratory procedures and techniques of, analytical chemistry, synthetic organic chemistry, and medicinal and pharmaceutical chemistry described herein are those known in the art. Standard chemical symbols are used interchangeably with the full names represented by such symbols. Thus, for example, the terms “hydrogen” and “H” are understood to have identical meaning. Standard techniques may be used for chemical syntheses, chemical analyses, pharmaceutical preparation, formulation, and delivery, and treatment of patients. Standard techniques may be used for recombinant DNA, oligonucleotide synthesis, and tissue culture and transformation (e.g., electroporation, lipofection). Reactions and purification techniques may be performed e.g., using kits according to manufacturer's specifications or as commonly accomplished in the art or as described herein. The foregoing techniques and procedures may be generally performed according to conventional methods well known in the art and as described in various general and more specific references that are cited and discussed throughout the present specification. See e.g., Sambrook et al. Molecular Cloning: A Laboratory Manual (2^(nd) ed., Cold Spring Harbor Laboratory Press, Cold Spring Harbor, N.Y. (1989)), which is incorporated herein by reference in its entirety for any purpose.

The term “alkyl” refers to a branched or unbranched aliphatic hydrocarbon group. An alkyl may be a “saturated alkyl,” which means that it does not contain any alkene or alkyne groups. An alkyl group may be an “unsaturated alkyl,” which means that it comprises at least one alkene or alkyne group. An alkyl, whether saturated or unsaturated, may be branched or straight chain. Alkyls may be cyclic or non-cyclic. Cyclic alkyls may include multicyclic systems including fused alkyl rings. Alkyls may be substituted or unsubstituted. Alkyls include, but are not limited to, methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tertiary butyl, pentyl, hexyl, ethenyl, propenyl, butenyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, and the like, each of which may be optionally substituted.

In certain embodiments, an alkyl comprises 1 to 20 carbon atoms (whenever it appears herein, a numerical range such as “1 to 20” refers to each integer in the given range; e.g., “1 to 20 carbon atoms” means that an alkyl group may comprise only 1 carbon atom, 2 carbon atoms, 3 carbon atoms, etc., up to and including 20 carbon atoms, although the term “alkyl” also includes instances where no numerical range of carbon atoms is designated).

The term “lower alkyl” refers to an alkyl comprising 1 to 5 carbon atoms. The term “medium alkyl” refers to an alkyl comprising 5 to 10 carbon atoms. An alkyl may be designated as “C₁-C₄ alkyl” or similar designations. By way of example only, “C₁-C₄ alkyl” indicates an alkyl having one, two, three, or four carbon atoms, e.g., the alkyl is selected from methyl, ethyl, propyl, iso-propyl, n-butyl, iso-butyl, sec-butyl, and t-butyl.

The term “alkenyl” refers to an alkyl group comprising at least one carbon-carbon double bond, including by way of non-limiting example ethenyl, propenyl, and butenyl.

The term “alkynyl” refers to an alkyl group comprising at least one carbon-carbon triple bond, including by way of non-limiting example ethynyl, propynyl, and butynyl.

The term “haloalkyl” refers to an alkyl in which at least one hydrogen atom is replaced with a halogen atom. In certain of the embodiments in which two or more hydrogen atoms are replaced with halogen atoms, the halogen atoms are all the same as one another. In certain of such embodiments, the halogen atoms are not all the same as one another.

The term “heteroalkyl” refers to a branched or unbranched aliphatic hydrocarbon group comprising one or more oxygen, sulfur, nitrogen, or NH. Examples of heteroalkyls include, but are not limited to, CH₃C(═O)CH₂—, CH₃C(═O)CH₂CH₂—, CH₃CH₂C(═O)CH₂CH₂—, CH₃C(═O)CH₂CH₂CH₂—, CH₃NHC(═O)CH₂—, CH₃C(═O)NHCH₂—, CH₃OCH₂CH₂—, CH₃NHCH₂—, and the like.

The term “straight-chain alkoxy” refers to a group comprising the formula: —(CH₂)_(p)O— wherein p is any integer. Straight-chain alkoxy does not include substituted or branched alkoxy groups.

The term “non-straight-chain-alkoxy-heteroalkyl” refers to any heteroalkyl that is not a straight-chain alkoxy heteroalkyl. Thus, for example, non-straight-chain-alkoxy heteroalkyls include, but are not limited to: 2,2-isopropyloxy; 1,2-propyloxy; 1,1-ethyloxy; methylamino; ethylamino; propylamino; methylpyrrolidino; and methylpiperidino.

The term “heterohaloalkyl” refers to a heteroalkyl in which at least one hydrogen atom is replaced with a halogen atom.

The term “carbocycle” refers to a group comprising a covalently closed ring, wherein each of the atoms that forms and/or comprises the ring is a carbon atom. Carbocyclic rings may be formed by three, four, five, six, seven, eight, nine, or more than nine carbon atoms. Carbocycles may be optionally substituted.

The term “heterocycle” refers to a group comprising a covalently closed ring wherein at least one atom that forms and/or comprises the ring is a heteroatom. Heterocyclic rings may be formed by three, four, five, six, seven, eight, nine, or more than nine atoms. Any number of those atoms may be heteroatoms (i.e., a heterocyclic ring may comprise one, two, three, four, five, six, seven, eight, nine, or more than nine heteroatoms). In heterocyclic rings comprising two or more heteroatoms, those two or more heteroatoms may be the same or different from one another. Heterocycles may be optionally substituted. Binding to a heterocycle can be at a heteroatom or via a carbon atom. For example, binding for benzo-fused derivatives, may be via a carbon of the benzenoid ring. Examples of heterocycles include, but are not limited to the following:

wherein D, E, F, and G independently represent a heteroatom. Each of D, E, F, and G may be the same or different from one another.

The term “heteroatom” refers to an atom other than carbon or hydrogen. Heteroatoms, typically, are independently selected from oxygen, sulfur, nitrogen, and phosphorus, but heteroatoms are not limited to those atoms. In embodiments in which two or more heteroatoms are present, the two or more heteroatoms may all be the same as one another, or some or all of the two or more heteroatoms may each be different from the others.

The term “aromatic” refers to a group comprising a covalently closed ring having a delocalized π-electron system. Aromatic rings may be formed by five, six, seven, eight, nine, or more than nine atoms. Aromatics may be optionally substituted. Examples of aromatic groups include, but are not limited to phenyl, naphthalenyl, phenanthrenyl, anthracenyl, tetralinyl, fluorenyl, indenyl, and indanyl. The term aromatic includes, for example, benzenoid groups, connected via one of the ring-forming carbon atoms, and optionally carrying one or more substituents selected from an aryl, a heteroaryl, a cycloalkyl, a non-aromatic ring, a halo, a hydroxy, an amino, a cyano, a nitro, an alkylamido, an acyl, a C₁₋₆ alkoxy, a C₁₋₆ alkyl, a C₁₋₆ hydroxyalkyl, a C₁₋₆ aminoalkyl, a C₁₋₆ alkylamino, an alkylsulfenyl, an alkylsulfinyl, an alkylsulfonyl, an sulfamoyl, or a trifluoromethyl. In certain embodiments, an aromatic group is substituted at one or more of the para, meta, and/or ortho positions. Examples of aromatic groups comprising substitutions include, but are not limited to, phenyl, 3-halophenyl, 4-halophenyl, 3-hydroxyphenyl, 4-hydroxyphenyl, 3-aminophenyl, 4-aminophenyl, 3-methylphenyl, 4-methylphenyl, 3-methoxyphenyl, 4-methoxyphenyl, 4-trifluoromethoxyphenyl, 3-cyanophenyl, 4-cyanophenyl, dimethylphenyl, naphthyl, hydroxynaphthyl, hydroxymethylphenyl, (trifluoromethyl)phenyl, alkoxyphenyl, 4-morpholin-4-ylphenyl, 4-pyrrolidin-1-ylphenyl, 4-pyrazolylphenyl, 4-triazolylphenyl, and 4-(2-oxopyrrolidin-1-yl)phenyl.

The term “aryl” refers to an aromatic group wherein each of the atoms forming the ring is a carbon atom. Aryl rings may be formed by five, six, seven, eight, nine, or more than nine carbon atoms. Aryl groups may be optionally substituted.

The term “heteroaryl” refers to an aromatic group wherein at least one atom forming the aromatic ring is a heteroatom. Heteroaryl rings may be formed by three, four, five, six, seven, eight, nine, or more than nine atoms. Heteroaryl groups may be optionally substituted. Examples of heteroaryl groups include, but are not limited to, aromatic C₃-8 heterocyclic groups comprising one oxygen or sulfur atom or up to four nitrogen atoms, or a combination of one oxygen or sulfur atom and up to two nitrogen atoms, and their substituted as well as benzo- and pyrido-fused derivatives, for example, connected via one of the ring-forming carbon atoms. In certain embodiments, heteroaryl groups are optionally substituted with one or more substituents, independently selected from halo, hydroxy, amino, cyano, nitro, alkylamido, acyl, C₁₋₆-alkoxy, C₁₋₆-alkyl, C₁₋₆-hydroxyalkyl, C₁₋₆-aminoalkyl, C₁₋₆-alkylamino, alkylsulfenyl, alkylsulfinyl, alkylsulfonyl, sulfamoyl, or trifluoromethyl. Examples of heteroaryl groups include, but are not limited to, unsubstituted and mono- or di-substituted derivatives of furan, benzofuran, thiophene, benzothiophene, pyrrole, pyridine, indole, oxazole, benzoxazole, isoxazole, benzisoxazole, thiazole, benzothiazole, isothiazole, imidazole, benzimidazole, pyrazole, indazole, tetrazole, quinoline, isoquinoline, pyridazine, pyrimidine, purine, pyrazine, furazan, 1,2,3-oxadiazole, 1,2,3-thiadiazole, 1,2,4-thiadiazole, triazole, benzotriazole, pteridine, phenoxazole, oxadiazole, benzopyrazole, quinolizine, cinnoline, phthalazine, quinazoline, and quinoxaline. In some embodiments, the substituents are halo, hydroxy, cyano, O—C₁₋₆-alkyl, C₁₋₆-alkyl, hydroxy-C₁₋₆-alkyl, and amino-C₁₋₆-alkyl.

The term “non-aromatic ring” refers to a group comprising a covalently closed ring that does not have a delocalized π-electron system in its principle and/or predominant tautomer.

The term “cycloalkyl” refers to a group comprising a non-aromatic ring wherein each of the atoms forming the ring is a carbon atom. Cycloalkyl rings may be formed by three, four, five, six, seven, eight, nine, or more than nine carbon atoms. Cycloalkyls may include multicyclic systems (e.g., fused ring systems). Cycloalkyls may be optionally substituted. In certain embodiments, a cycloalkyl comprises one or more unsaturated bonds. Examples of cycloalkyls include, but are not limited to, cyclopropane, cyclobutane, cyclopentane, cyclopentene, cyclopentadiene, cyclohexane, cyclohexene, 1,3-cyclohexadiene, 1,4-cyclohexadiene, cycloheptane, and cycloheptene.

The term “non-aromatic ring” refers to a group comprising a non-aromatic ring moiety wherein the atoms that form and/or comprise the ring include carbon and/or heteroatoms. When heteroatoms are included in the ring, one or more such heteroatoms may be present. Non-aromatic rings also optionally include one or more carbonyl or thiocarbonyl groups as part of the ring. Non-aromatic rings may be formed by three, four, five, six, seven, eight, nine, or more than nine atoms. Non-aromatic rings may be optionally substituted. Examples of non-aromatic rings include, but are not limited to, cycloalkyls (including but not limited to cyclopropane, cyclobutane, cyclopentane, cyclopentene, cyclopentadiene, cyclohexane, cyclohexene, 1,3-cyclohexadiene, 1,4-cyclohexadiene, cycloheptane, and cycloheptene), lactams, lactones, cyclic imides, cyclic thioimides, cyclic carbamates, tetrahydrothiopyran, 4H-pyran, tetrahydropyran, piperidine, 1,3-dioxin, 1,3-dioxane, 1,4-dioxin, 1,4-dioxane, piperazine, 1,3-oxathiane, 1,4-oxathiin, 1,4-oxathiane, tetrahydro-1,4-thiazine, 2H-1,2-oxazine, maleimide, succinimide, barbituric acid, thiobarbituric acid, dioxopiperazine, hydantoin, dihydrouracil, morpholine, trioxane, hexahydro-1,3,5-triazine, tetrahydrothiophene, tetrahydrofuran, pyrroline, pyrrolidine, pyrrolidone, pyrrolidione, pyrazoline, pyrazolidine, imidazoline, imidazolidine, 1,3-dioxole, 1,3-dioxolane, 1,3-dithiole, 1,3-dithiolane, isoxazoline, isoxazolidine, oxazoline, oxazolidine, oxazolidinone, thiazoline, thiazolidine, and 1,3-oxathiolane.

The term “arylalkyl” refers to a group comprising an aryl group bound to an alkyl group.

The term “ring” refers to any covalently closed structure. Rings include, for example, carbocycles (e.g., aryls and cycloalkyls), heterocycles (e.g., heteroaryls and non-aromatic heterocyclic rings), aromatics (e.g., aryls and heteroaryls), and non-aromatic rings. Rings may be optionally substituted. Rings may form part of a ring system.

The term “ring system” refers to a either a single ring or two or more rings, wherein, if two or more rings are present, the two or more of the rings are fused. The term “fused” refers to structures in which two or more rings share one or more bonds.

The substituent “R” appearing by itself and without a number designation refers to a substituent selected from alkyl, cycloalkyl, aryl, heteroaryl (bonded through a ring carbon) and non-aromatic ring (bonded through a ring carbon).

The term “O-carboxy” refers to the group consisting of formula RC(═O)O—.

The term “C-carboxy” refers to the group consisting of formula —C(═O)OR.

The term “acetyl” refers to the group consisting of formula —C(═O)CH₃.

The term “trihalomethanesulfonyl” refers to the group consisting of formula X₃CS(═O)₂— where X is a halogen.

The term “cyano” refers to the group consisting of formula —CN.

The term “isocyanato” refers to the group consisting of formula —NCO.

The term “thiocyanato” refers to the group consisting of formula —CNS.

The term “isothiocyanato” refers to the group consisting of formula —NCS.

The term “sulfonyl” refers to the group consisting of formula —S(═O) 13 R.

The term “S-sulfonamido” refers to the group consisting of formula —S(═O)₂NR.

The term “N-sulfonamido” refers to the group consisting of formula RS(═O)₂NH—.

The term “trihalomethanesulfonamido” refers to the group consisting of formula X₃CS(═O)₂NR—.

The term “O-carbamyl” refers to the group consisting of formula —OC(═O)—NR.

The term “N-carbamyl” refers to the group consisting of formula ROC(═O)NH—.

The term “O-thiocarbamyl” refers to the group consisting of formula —OC(═S)—NR.

The term “N-thiocarbamyl” refers to the group consisting of formula ROC(═S)NH—.

The term “C-amido” refers to the group consisting of formula —C(═O)—NR₂.

The term “N-amido” refers to the group consisting of formula RC(═O)NH—.

The term “oxo” refers to the group consisting of formula ═O.

The term “carbonyl” refers to the group consisting of formula —C(═O)R.

The term “thiocarbonyl” refers to the group consisting of formula —C(═S)R.

The term “dihydropyrazolylene” refers to a di-radical of an optionally substituted dihydropyrazole ring, wherein the dihydropyrazole ring has the structure:

and wherein the two radicals may be at any positions on the ring.

The term “pyrazolyl” refers to a radical of a pyrazole ring, wherein the pyrazole ring has the structure:

and wherein the radical may be at any position on the ring.

The term “ester” refers to a chemical moiety with formula —(R)_(n)—COOR′, where R and R′ are independently selected from alkyl, cycloalkyl, aryl, heteroaryl (bonded through a ring carbon) and non-aromatic ring (bonded through a ring carbon), where n is 0 or 1.

The term “amide” refers to a chemical moiety with formula —(R)_(n)—C(O)NHR′ or —(R)_(n)—NHC(O)R′, where R and R′ are independently selected from alkyl, cycloalkyl, aryl, heteroaryl (bonded through a ring carbon) and heteroalicyclic (bonded through a ring carbon), where n is 0 or 1. In certain embodiments, an amide may be an amino acid or form part of a peptide.

The terms “amine,” “hydroxy,” and “carboxyl” include such groups that have been esterified or amidified. Procedures and specific groups used to achieve esterification and amidification are known to those of skill in the art and can readily be found in reference sources such as Greene and Wuts, Protective Groups in Organic Synthesis, 3^(rd) Ed., John Wiley & Sons, New York, NY, 1999, which is incorporated herein in its entirety.

Unless otherwise indicated, the term “optionally substituted” refers to a group in which none, one, or more than one of the hydrogen atoms has been replaced with one or more group(s) individually and independently selected from: alkyl, heteroalkyl, haloalkyl, alkenyl, alkynyl, heterohaloalkyl, cycloalkyl, aryl, arylalkyl, heteroaryl, non-aromatic ring, hydroxy, alkoxy, aryloxy, mercapto, alkylthio, arylthio, cyano, halo, carbonyl, thiocarbonyl, O-carbamyl, N-carbamyl, O-thiocarbamyl, N-thiocarbamyl, C-amido, N-amido, S-sulfonamido, N-sulfonamido, C-carboxy, O-carboxy, isocyanato, thiocyanato, isothiocyanato, nitro, silyl, trihalomethanesulfonyl, oxo, and amino, including mono- and di-substituted amino groups, and the protected derivatives of amino groups. Such protective derivatives (and protecting groups that may form such protective derivatives) are known to those of skill in the art and may be found in references such as Greene and Wuts, above. In embodiments in which two or more hydrogen atoms have been substituted, the substituent groups may together form a ring.

Throughout the specification, groups and substituents thereof can be chosen by one skilled in the field to provide stable moieties and compounds.

The term “carrier” refers to a compound that facilitates the incorporation of another compound into cells or tissues. For example, dimethyl sulfoxide (DMSO) is a commonly used carrier for improving incorporation of certain organic compounds into cells or tissues.

The term “pharmaceutical agent” refers to a chemical compound or composition capable of inducing a desired therapeutic effect in a patient. In certain embodiments, a pharmaceutical agent comprises an active agent, which is the agent that induces the desired therapeutic effect. In certain embodiments, a pharmaceutical agent comprises a prodrug. In certain embodiments, a pharmaceutical agent comprises inactive ingredients such as carriers, excipients, and the like.

The term “therapeutically effective amount” refers to an amount of a pharmaceutical agent sufficient to achieve a desired therapeutic effect.

The term “prodrug” refers to a pharmaceutical agent that is converted from a less active form into a corresponding more active form in vivo.

The term “pharmaceutically acceptable” refers to a formulation of a compound that does not significantly abrogate the biological activity, a pharmacological activity and/or other properties of the compound when the formulated compound is administered to a patient. In certain embodiments, a pharmaceutically acceptable formulation does not cause significant irritation to a patient.

The term “co-administer” refers to administering more than one pharmaceutical agent to a patient. In certain embodiments, co-administered pharmaceutical agents are administered together in a single dosage unit. In certain embodiments, co-administered pharmaceutical agents are administered separately. In certain embodiments, co-administered pharmaceutical agents are administered at the same time. In certain embodiments, co-administered pharmaceutical agents are administered at different times.

The term “patient” includes human and animal subjects.

The term “substantially pure” means an object species (e.g., compound) is the predominant species present (i.e., on a molar basis it is more abundant than any other individual species in the composition). In certain embodiments, a substantially purified fraction is a composition wherein the object species comprises at least about 50 percent (on a molar basis) of all species present. In certain embodiments, a substantially pure composition will comprise more than about 80%, 85%, 90%, 95%, or 99% of all species present in the composition. In certain embodiments, the object species is purified to essential homogeneity (contaminant species cannot be detected in the composition by conventional detection methods) wherein the composition consists essentially of a single species.

Certain Compounds

In certain embodiments, compounds of Formula (I) are provided:

-   -   or a salt, ester, amide, or prodrug thereof,     -   wherein     -   is a single or double bond;     -   W is selected from CH, CH—CH, O, S, NR⁶, and CO;     -   Y is N or CR⁹;     -   Z is N or C, and Z is N if W is CH and Y is CR⁹;     -   R⁴ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         an optionally substituted aryl, an optionally substituted         heteroaryl, an optionally substituted non-aromatic ring, an         optionally substituted carbocycle, an optionally substituted         C₁-C₆ alkyl, an optionally substituted C₁-C₆ haloalkyl, an         optionally substituted C₁-C₆ heteroalkyl, an optionally         substituted C₁-C₆ alkenyl, an optionally substituted C₁-C₆         alkynyl, CO₂R⁶, SO₃R⁶, SO₂R⁶ and SO₂NR⁷R⁸;     -   R⁵ is selected from hydrogen, halogen, OR⁶, an optionally         substituted C₁-C₆ alkyl, an optionally substituted C₁-C₆         haloalkyl, an optionally substituted C₁-C₆ heteroalkyl, an         optionally substituted C₁-C₆ haloheteroalkyl, an optionally         substituted C₁-C₆ alkenyl, and an optionally substituted C₁-C₆         alkynyl;     -   or R⁴ and R⁵ are linked to form an optionally substituted         non-aromatic ring;     -   each R⁶ is independently selected from an optionally substituted         aryl, an optionally substituted heteroaryl, and an optionally         substituted non-aromatic ring, each optionally fused with a         substituted aryl or a substituted heteroaryl, hydrogen, an         optionally substituted C₁-C₁₀ alkyl, an optionally substituted         C₁-C₁₀ haloalkyl, and an optionally substituted C₁-C₁₀         heteroalkyl;     -   each R⁷ and R⁸ is independently selected from an optionally         substituted aryl, an optionally substituted heteroaryl, an         optionally substituted non-aromatic ring, each optionally fused         with a substituted aryl or a substituted heteroaryl, hydrogen,         an optionally substituted C₁-C₁₀ alkyl, an optionally         substituted C₁-C₁₀ haloalkyl, an optionally substituted C₁-C₁₀         alkenyl, an optionally substituted C₁-C₁₀ alkynyl, and an         optionally substituted C₁-C₁₀ heteroalkyl, or R⁷ and R⁸ are         linked to form an optionally substituted non-aromatic ring;     -   R⁹ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         an optionally substituted aryl, an optionally substituted         heteroaryl, an optionally substituted non-aromatic ring, an         optionally substituted C₁-C₆ alkyl, an optionally substituted         C₁-C₆ haloalkyl, an optionally substituted C₁-C₆ heteroalkyl, an         optionally substituted C₁-C₆ alkenyl, an optionally substituted         C₁-C₆ alkynyl, CO₂R⁶, SO₃R⁶, and SO₂NR⁷R⁸;     -   A is an optionally substituted aryl or an optionally substituted         heteroaryl group;     -   each optionally substituted group is either unsubstituted or         substituted with one or more groups independently selected from         alkyl, heteroalkyl, alkenyl, alkynyl, haloalkyl,         heterohaloalkyl, aryl, arylalkyl, heteroaryl, non-aromatic ring,         hydroxy, alkoxy, aryloxy, mercapto, alkylthio, arylthio, cyano,         halo, carbonyl, thiocarbonyl, O-carbamyl, N-carbamyl,         O-thiocarbamyl, N-thiocarbamyl, C-amido, N-amido, S-sulfonamido,         N-sulfonamido, C-carboxy, O-carboxy, isocyanato, thiocyanato,         isothiocyanato, nitro, silyl, trihalomethanesulfonyl, ═O, ═S,         amino, and protected derivatives of amino groups.

In some embodiments, R⁴ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶, an optionally substituted aryl, an optionally substituted heteroaryl, an optionally substituted non-aromatic ring, an optionally substituted carbocycle, an optionally substituted C₁-C₆ alkyl, an optionally substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆ heteroalkyl, an optionally substituted C₁-C₆ alkenyl, an optionally substituted C₁-C₆ alkynyl, CO₂R⁶, SO₃R⁶, SO₂R⁶ and SO₂NR⁷R⁸.

In some embodiments, if R⁴ is pyrazolyl, the pyrazolyl is not substituted with aryl or heteroaryl groups.

In some embodiments, if R⁴ is oxazolyl, isoxazolyl, or imidazoyl, the oxazolyl, isoxazolyl, or imidazoyl radical is not substituted with aryl or heteroaryl groups.

Some embodiments include a compound represented by Formula (I-A):

-   -   or a salt, ester, amide, or prodrug thereof,     -   wherein     -   X is N or CR⁵′, wherein R⁵′ is selected from hydrogen, halogen,         OR⁶, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         heteroalkyl, an optionally substituted C₁-C₆ haloheteroalkyl, an         optionally substituted C₁-C₆ alkenyl, and an optionally         substituted C₁-C₆ alkynyl;     -   R¹ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         CH₂NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         alkenyl, an optionally substituted C₁-C₆ alkynyl, an optionally         substituted C₁-C₆ heteroalkyl, CO₂R⁶, CONR⁷R⁸, SO₃R⁶, and         SO₂NR⁷R⁸;     -   R² and R³ are independently selected from hydrogen, halogen,         OR⁶, NR⁷R⁸, an optionally substituted C₁-C₆ alkyl, an optionally         substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆         alkenyl, an optionally substituted C₁-C₆ alkynyl, and an         optionally substituted C₁-C₆ heteroalkyl.

Some embodiments include a compound represented by Formula (II), (III), or (IV):

-   -   or a salt, ester, amide, or prodrug thereof,     -   wherein:     -   W is selected from O, S, NR⁶, and CO;     -   X is N or CR⁵;     -   Y is N or CR⁹;     -   R⁴ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         an optionally substituted aryl, an optionally substituted         heteroaryl, an optionally substituted non-aromatic ring, an         optionally substituted carbocycle, an optionally substituted         C₁-C₆ alkyl, an optionally substituted C₁-C₆ haloalkyl, an         optionally substituted C₁-C₆ heteroalkyl, an optionally         substituted C₁-C₆ alkenyl, an optionally substituted C₁-C₆         alkynyl, CO₂R⁶, SO₃R⁶, and SO₂NR⁷R⁸;     -   each R⁵ is independently selected from hydrogen, halogen, OR⁶,         an optionally substituted C₁-C₆ alkyl, an optionally substituted         C₁-C₆ haloalkyl, an optionally substituted C₁-C₆ heteroalkyl, an         optionally substituted C₁-C₆ haloheteroalkyl, an optionally         substituted C₁-C₆ alkenyl, and an optionally substituted C₁-C₆         alkynyl;     -   or R⁴ and R⁵ are linked to form an optionally substituted         non-aromatic ring;     -   each R⁶ is independently selected from hydrogen, an optionally         substituted aryl, an optionally substituted heteroaryl, an         optionally substituted non-aromatic ring, an optionally         substituted C₁-C₁₀ alkyl, an optionally substituted C₁-C₁₀         haloalkyl, and an optionally substituted C₁-C₁₀ heteroalkyl,         each optionally fused with a substituted aryl or a substituted         heteroaryl;     -   each R⁷ and R⁸ is independently selected from hydrogen, an         optionally substituted aryl, an optionally substituted         heteroaryl, an optionally substituted non-aromatic ring, an         optionally substituted C₁-C₁₀ alkyl, an optionally substituted         C₁-C₁₀ haloalkyl, an optionally substituted C₁-C₁₀ alkenyl, an         optionally substituted C₁-C₁₀ alkynyl, and an optionally         substituted C₁-C₁₀ heteroalkyl, each optionally fused with a         substituted aryl or a substituted heteroaryl, or R⁷ and R⁸ are         linked to form an optionally substituted non-aromatic ring;     -   R⁹ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶,         an optionally substituted aryl, an optionally substituted         heteroaryl, an optionally substituted non-aromatic ring, an         optionally substituted C₁-C₆ alkyl, an optionally substituted         C₁-C₆ haloalkyl, an optionally substituted C₁-C₆ heteroalkyl, an         optionally substituted C₁-C₆ alkenyl, an optionally substituted         C₁-C₆ alkynyl, CO₂R⁶, SO₃R⁶, and SO₂NR⁷R⁸;     -   A is an optionally substituted aryl or an optionally substituted         heteroaryl group;     -   each optionally substituted group is either unsubstituted or         substituted with one or more groups independently selected from         alkyl, heteroalkyl, alkenyl, alkynyl, haloalkyl,         heterohaloalkyl, aryl, arylalkyl, heteroaryl, non-aromatic ring,         hydroxy, alkoxy, aryloxy, mercapto, alkylthio, arylthio, cyano,         halo, carbonyl, thiocarbonyl, O-carbamyl, N-carbamyl,         O-thiocarbamyl, N-thiocarbamyl, C-amido, N-amido, S-sulfonamido,         N-sulfonamido, C-carboxy, O-carboxy, isocyanato, thiocyanato,         isothiocyanato, nitro, silyl, trihalomethanesulfonyl, ═O, ═S,         amino, and protected derivatives of amino groups.

In some embodiments, if R⁴ is a pyrazolyl, oxazolyl, isoxazolyl, or imidazoyl radical in compounds of Formula (II), (III), or (IV), the pyrazolyl, oxazolyl, isoxazolyl, or imidazoyl radical is not substituted with aryl or heteroaryl groups.

In some specific embodiments, if R⁴ is a pyrazolyl radical in compounds of Formula (II), (III), or (IV), the pyrazolyl is not substituted with aryl or heteroaryl groups.

Certain Synthetic Methods

In certain embodiments, compounds of the present invention can by synthesized using the following Schemes.

Scheme I describes the synthesis of aminopyridine substituted benzothiazoles. An aminopyridine 1 is treated with a base such as NaH and reacted with 6-bromo-2-chlorobenzothiazole 2 to afford compounds of structure 3. Palladium catalyzed coupling of structure 3 with a boronic acid affords compounds of structure 4.

Scheme II describes the synthesis of aminopyridine substituted benzothiazoles. Aminopyridine 1 is converted to an isothiocyanate 5 and reacted with an aniline 6, to give a thiourea 7. The thiourea is oxidatively cyclized with, for example, bromine to give the benzothiazole 4.

Scheme III describes the synthesis of aminopyridine substituted imidazopyridines 10. A 2-halopyridine, such as compound 8, is coupled with an aminoimidazopyridine, such as 9, under the influence of a palladium catalyst and a base to furnish products 10.

One of skill in the art will recognize that analogous synthetic schemes may be used to synthesize similar compounds. One of skill will recognize that compounds of the present invention may be synthesized using other synthesis schemes. In certain embodiments, the invention provides a salt corresponding to any of the compounds provided herein.

Certain Pharmaceutical Agents

Some embodiments include pharmaceutical agents. In some embodiments a pharmaceutical agent can include a compound and/or composition provided herein and a pharmaceutical carrier. In certain embodiments, at least one compound of Formula (I), (II), (III), or (IV), or a pharmaceutically acceptable salt, ester, amide, and/or prodrug thereof, either alone or combined with one or more pharmaceutically acceptable carriers, forms a pharmaceutical agent. Techniques for formulation and administration of compounds of the present embodiments may be found for example, in “Remington's Pharmaceutical Sciences,” Mack Publishing Co., Easton, PA, 18th edition, 1990, which is incorporated herein by reference in its entirety.

In certain embodiments, a pharmaceutical agent comprising one or more compounds of the present embodiments is prepared using known techniques, including, but not limited to mixing, dissolving, granulating, dragee-making, levigating, emulsifying, encapsulating, entrapping or tabletting processes.

In certain embodiments, a pharmaceutical agent comprising one or more compounds of the present embodiments is a liquid (e.g., a suspension, elixir and/or solution). In certain of such embodiments, a liquid pharmaceutical agent comprising one or more compounds of the present embodiments is prepared using ingredients known in the art, including, but not limited to, water, glycols, oils, alcohols, flavoring agents, preservatives, and coloring agents.

In certain embodiments, a pharmaceutical agent comprising one or more compounds of the present embodiments is a solid (e.g., a powder, tablet, and/or capsule). In certain of such embodiments, a solid pharmaceutical agent comprising one or more compounds of the present embodiments is prepared using ingredients known in the art, including, but not limited to, starches, sugars, diluents, granulating agents, lubricants, binders, and disintegrating agents.

In certain embodiments, a pharmaceutical agent comprising one or more compounds of the present embodiments is formulated as a depot preparation. Certain such depot preparations are typically longer acting than non-depot preparations. In certain embodiments, such preparations are administered by implantation (for example subcutaneously or intramuscularly) or by intramuscular injection. In certain embodiments, depot preparations are prepared using suitable polymeric or hydrophobic materials (for example an emulsion in an acceptable oil) or ion exchange resins, or as sparingly soluble derivatives, for example, as a sparingly soluble salt.

In certain embodiments, a pharmaceutical agent comprising one or more compounds of the present embodiments comprises a delivery system. Examples of delivery systems include, but are not limited to, liposomes and emulsions. Certain delivery systems are useful for preparing certain pharmaceutical agents including those comprising hydrophobic compounds. In certain embodiments, certain organic solvents such as dimethylsulfoxide are used.

In certain embodiments, a pharmaceutical agent comprising one or more compounds of the present embodiments comprises one or more tissue-specific delivery molecules designed to deliver the pharmaceutical agent to specific tissues or cell types. For example, in certain embodiments, pharmaceutical agents include liposomes coated with a tissue-specific antibody.

In certain embodiments, a pharmaceutical agent comprising one or more compounds of the present embodiments comprises a co-solvent system. Certain of such co-solvent systems comprise, for example, benzyl alcohol, a nonpolar surfactant, a water-miscible organic polymer, and an aqueous phase. In certain embodiments, such co-solvent systems are used for hydrophobic compounds. A non-limiting example of such a co-solvent system is the VPD co-solvent system, which is a solution of absolute ethanol comprising 3% w/v benzyl alcohol, 8% w/v of the nonpolar surfactant Polysorbate 80™, and 65% w/v polyethylene glycol 300. The proportions of such co-solvent systems may be varied considerably without significantly altering their solubility and toxicity characteristics. Furthermore, the identity of co-solvent components may be varied: for example, other surfactants may be used instead of Polysorbate 80™; the fraction size of polyethylene glycol may be varied; other biocompatible polymers may replace polyethylene glycol, e.g., polyvinyl pyrrolidone; and other sugars or polysaccharides may substitute for dextrose.

In certain embodiments, a pharmaceutical agent comprising one or more compounds of the present embodiments comprises a sustained-release system. A non-limiting example of such a sustained-release system is a semi-permeable matrix of solid hydrophobic polymers. In certain embodiments, sustained-release systems may, depending on their chemical nature, release compounds over a period of hours, days, weeks or months.

Certain compounds used in pharmaceutical agent of the present embodiments may be provided as pharmaceutically acceptable salts with pharmaceutically compatible counterions. Pharmaceutically compatible salts may be formed with many acids, including but not limited to hydrochloric, sulfuric, acetic, lactic, tartaric, malic, succinic, etc.

In certain embodiments, a pharmaceutical agent comprising one or more compounds of the present embodiments comprises an active ingredient in a therapeutically effective amount. In certain embodiments, the therapeutically effective amount is sufficient to prevent, alleviate or ameliorate symptoms of a disease or to prolong the survival of the subject being treated. Determination of a therapeutically effective amount is well within the capability of those skilled in the art.

In certain embodiments, a pharmaceutical agent comprising one or more compounds of the present embodiments is formulated as a prodrug. In certain embodiments, prodrugs are useful because they are easier to administer than the corresponding active form. For example, in certain instances, a prodrug may be more bioavailable (e.g., through oral administration) than is the corresponding active form. In certain instances, a prodrug may have improved solubility compared to the corresponding active form. In certain embodiments, a prodrug is an ester. In certain embodiments, such prodrugs are less water soluble than the corresponding active form. In certain instances, such prodrugs possess superior transmittal across cell membranes, where water solubility is detrimental to mobility. In certain embodiments, the ester in such prodrugs is metabolically hydrolyzed to carboxylic acid. In certain instances the carboxylic acid containing compound is the corresponding active form. In certain embodiments, a prodrug comprises a short peptide (polyaminoacid) bound to an acid group. In certain of such embodiments, the peptide is metabolized to form the corresponding active form.

In certain embodiments, a pharmaceutical agent comprising one or more compounds of the present embodiments is useful for treating a condition or disorder in a mammal, such as a human. Suitable administration routes include, but are not limited to, oral, rectal, transmucosal, intestinal, enteral, topical, suppository, through inhalation, intrathecal, intraventricular, intraperitoneal, intranasal, intraocular and parenteral (e.g., intravenous, intramuscular, intramedullary, and subcutaneous). In certain embodiments, pharmaceutical intrathecals are administered to achieve local rather than systemic exposures. For example, pharmaceutical agents may be injected directly in the area of desired effect (e.g., in the renal or cardiac area).

In certain embodiments, a pharmaceutical agent comprising one or more compounds of the present embodiments is administered in the form of a dosage unit (e.g., tablet, capsule, bolus, etc.). In certain embodiments, such dosage units comprise a compound or composition provided herein, such as a compound or composition comprising Formula (I), (II), (III), or (IV), in a dose from about 1 μg/kg of body weight to about 50 mg/kg of body weight, and from about 2 μg/kg of body weight to about 25 mg/kg of body weight, from about 10 μg/kg of body weight to about 5 mg/kg of body weight. In certain embodiments, pharmaceutical agents are administered as needed, once per day, twice per day, three times per day, or four or more times per day. It is recognized by those skilled in the art that the particular dose, frequency, and duration of administration depends on a number of factors, including, without limitation, the biological activity desired, the condition of the patient, and tolerance for the pharmaceutical agent.

In certain embodiments, a pharmaceutical agent comprising a compound of the present embodiments is prepared for oral administration. In certain of such embodiments, a pharmaceutical agent is formulated by combining one or more compounds of the present embodiments with one or more pharmaceutically acceptable carriers. Certain of such carriers enable compounds of the present embodiments to be formulated as tablets, pills, dragees, capsules, liquids, gels, syrups, slurries, suspensions and the like, for oral ingestion by a patient. In certain embodiments, pharmaceutical agents for oral use are obtained by mixing one or more compounds of the present embodiments and one or more solid excipient. Suitable excipients include, but are not limited to, fillers, such as sugars, including lactose, sucrose, mannitol, or sorbitol; cellulose preparations such as, for example, maize starch, wheat starch, rice starch, potato starch, gelatin, gum tragacanth, methyl cellulose, hydroxypropylmethyl-cellulose, sodium carboxymethylcellulose, and/or polyvinylpyrrolidone (PVP). In certain embodiments, such a mixture is optionally ground and auxiliaries are optionally added. In certain embodiments, pharmaceutical agents are formed to obtain tablets or dragee cores. In certain embodiments, disintegrating agents (e.g., cross-linked polyvinyl pyrrolidone, agar, or alginic acid or a salt thereof, such as sodium alginate) are added.

In certain embodiments, dragee cores are provided with coatings. In certain of such embodiments, concentrated sugar solutions may be used, which may optionally contain gum arabic, talc, polyvinyl pyrrolidone, carbopol gel, polyethylene glycol, and/or titanium dioxide, lacquer solutions, and suitable organic solvents or solvent mixtures. Dyestuffs or pigments may be added to tablets or dragee coatings.

In certain embodiments, pharmaceutical agents for oral administration are push-fit capsules made of gelatin. Certain of such push-fit capsules comprise one or more compounds of the present embodiments in admixture with one or more filler such as lactose, binders such as starches, and/or lubricants such as talc or magnesium stearate and, optionally, stabilizers. In certain embodiments, pharmaceutical agents for oral administration are soft, sealed capsules made of gelatin and a plasticizer, such as glycerol or sorbitol. In certain soft capsules, one or more compounds of the present embodiments are be dissolved or suspended in suitable liquids, such as fatty oils, liquid paraffin, or liquid polyethylene glycols. In addition, stabilizers may be added.

In certain embodiments, pharmaceutical agents are prepared for buccal administration. Certain of such pharmaceutical agents are tablets or lozenges formulated in conventional manner.

In certain embodiments, a pharmaceutical agent is prepared for administration by injection (e.g., intravenous, subcutaneous, intramuscular, etc.). In certain of such embodiments, a pharmaceutical agent comprises a carrier and is formulated in aqueous solution, such as water or physiologically compatible buffers such as Hanks's solution, Ringer's solution, or physiological saline buffer. In certain embodiments, other ingredients are included (e.g., ingredients that aid in solubility or serve as preservatives). In certain embodiments, injectable suspensions are prepared using appropriate liquid carriers, suspending agents and the like. Certain pharmaceutical agents for injection are presented in unit dosage form, e.g., in ampoules or in multi-dose containers. Certain pharmaceutical agents for injection are suspensions, solutions or emulsions in oily or aqueous vehicles, and may contain formulatory agents such as suspending, stabilizing and/or dispersing agents. Certain solvents suitable for use in pharmaceutical agents for injection include, but are not limited to, lipophilic solvents and fatty oils, such as sesame oil, synthetic fatty acid esters, such as ethyl oleate or triglycerides, and liposomes. Aqueous injection suspensions may contain substances that increase the viscosity of the suspension, such as sodium carboxymethyl cellulose, sorbitol, or dextran. Optionally, such suspensions may also contain suitable stabilizers or agents that increase the solubility of the compounds to allow for the preparation of highly concentrated solutions.

In certain embodiments, a pharmaceutical agent is prepared for transmucosal administration. In certain of such embodiments penetrants appropriate to the barrier to be permeated are used in the formulation. Such penetrants are generally known in the art.

In certain embodiments, a pharmaceutical agent is prepared for administration by inhalation. Certain of such pharmaceutical agents for inhalation are prepared in the form of an aerosol spray in a pressurized pack or a nebulizer. Certain of such pharmaceutical agents comprise a propellant, e.g., dichlorodifluoromethane, trichlorofluoromethane, dichlorotetrafluoroethane, carbon dioxide or other suitable gas. In certain embodiments using a pressurized aerosol, the dosage unit may be determined with a valve that delivers a metered amount. In certain embodiments, capsules and cartridges for use in an inhaler or insufflator may be formulated. Certain of such formulations comprise a powder mixture of a compound of the present embodiments and a suitable powder base such as lactose or starch.

In certain embodiments, a pharmaceutical agent is prepared for rectal administration, such as a suppositories or retention enema. Certain of such pharmaceutical agents comprise known ingredients, such as cocoa butter and/or other glycerides.

In certain embodiments, a pharmaceutical agent is prepared for topical administration. Certain of such pharmaceutical agents comprise bland moisturizing bases, such as ointments or creams. Exemplary suitable ointment bases include, but are not limited to, petrolatum, petrolatum plus volatile silicones, lanolin and water in oil emulsions such as Eucerin™, available from Beiersdorf (Cincinnati, Ohio). Exemplary suitable cream bases include, but are not limited to, Nivea™ Cream, available from Beiersdorf (Cincinnati, Ohio), cold cream (USP), Purpose Cream™, available from Johnson & Johnson (New Brunswick, New Jersey), hydrophilic ointment (USP) and Lubriderm™, available from Pfizer (Morris Plains, New Jersey).

In certain embodiments, the formulation, route of administration and dosage for a pharmaceutical agent of the present embodiments can be chosen in view of a particular patient's condition. In certain embodiments, a pharmaceutical agent is administered as a single dose. In certain embodiments, a pharmaceutical agent is administered as a series of two or more doses administered over one or more days.

In certain embodiments, a pharmaceutical agent of the present embodiments is administered to a patient between about 0.1% and 500%, 5% and 200%, 10% and 100%, 15% and 85%, 25% and 75%, or 40% and 60% of an established human dosage. Where no human dosage is established, a suitable human dosage may be inferred from ED₅₀ or ID₅₀ values, or other appropriate values derived from in vitro or in vivo studies.

In certain embodiments, a daily dosage regimen for a patient comprises an oral dose of between 0.1 mg and 2000 mg, 5 mg and 1500 mg, 10 mg and 1000 mg, 20 mg and 500 mg, 30 mg and 200 mg, or 40 mg and 100 mg of a compound of the present embodiments. In certain embodiments, a daily dosage regimen is administered as a single daily dose. In certain embodiments, a daily dosage regimen is administered as two, three, four, or more than four doses.

In certain embodiments, a pharmaceutical agent of the present embodiments is administered by continuous intravenous infusion. In certain of such embodiments, from 0.1 mg to 500 mg of a composition of the present embodiments is administered per day.

In certain embodiments, a pharmaceutical agent of the present embodiments is administered for a period of continuous therapy. For example, a pharmaceutical agent of the present embodiments may be administered over a period of days, weeks, months, or years.

Dosage amount, interval between doses, and duration of treatment may be adjusted to achieve a desired effect. In certain embodiments, dosage amount and interval between doses are adjusted to maintain a desired concentration of compound in a patient. For example, in certain embodiments, dosage amount and interval between doses are adjusted to provide plasma concentration of a compound of the present embodiments at an amount sufficient to achieve a desired effect. In certain of such embodiments the plasma concentration is maintained above the minimal effective concentration (MEC). In certain embodiments, pharmaceutical agents of the present embodiments are administered with a dosage regimen designed to maintain a concentration above the MEC for 10-90% of the time, between 30-90% of the time, or between 50-90% of the time.

In certain embodiments in which a pharmaceutical agent is administered locally, the dosage regimen is adjusted to achieve a desired local concentration of a compound of the present embodiments.

In certain embodiments, a pharmaceutical agent may be presented in a pack or dispenser device which may contain one or more unit dosage forms containing the active ingredient. The pack may for example comprise metal or plastic foil, such as a blister pack. The pack or dispenser device may be accompanied by instructions for administration. The pack or dispenser may also be accompanied with a notice associated with the container in form prescribed by a governmental agency regulating the manufacture, use, or sale of pharmaceuticals, which notice is reflective of approval by the agency of the form of the drug for human or veterinary administration. Such notice, for example, may be the labeling approved by the U.S. Food and Drug Administration for prescription drugs, or the approved product insert. Compositions comprising a compound of the present embodiments formulated in a compatible pharmaceutical carrier may also be prepared, placed in an appropriate container, and labeled for treatment of an indicated condition.

In certain embodiments, a pharmaceutical agent is in powder form for constitution with a suitable vehicle, e.g., sterile pyrogen-free water, before use.

Certain Therapeutic Methods

Some compounds and compositions provided herein, such as compounds and/or compositions comprising Formula (I), (II), (III), and (IV) are useful for the treatment of a variety of diseases and disorders. Examples of diseases and disorders include inflammatory disorders, cell proliferative disorders, and immune-related disorders, and disorders associated with IRAK-mediated signal transduction.

Inflammation of tissues and organs occurs in a wide range of disorders and diseases and in certain variations results from activation of the cytokine family of receptors. Example inflammatory disorders associated with activation of IRAK kinases and/or disorders IRAK-mediated signal transduction include skin disorders, respiratory disorders, and other disorders with an allergic component. These disorders are treated or prevented by modulation of IRAK activity, for example, by administration of certain compounds and/or compositions provided herein. In some embodiments, methods of treating a subject in need thereof include administering an effective amount of a compound or composition provided herein. Some embodiments include treating a disorder responsive to inhibition of IRAK-mediated signal transduction.

Example skin disorders include dermatitis, cutaneous eosinophilias, Lichen planus, urticaria, psoriasis, pruritus, angioedemas, chronic skin ulcers, conjunctivitis, vasculitides, or erythemas. Examples of respiratory disorders include asthma, rhinitis, chronic obstructive pulmonary disease, bronchitis, nasal polyposis, nasal congestion, farmer's lung, fibroid lung and cough. Other example diseases that may be treated with the compounds and compositions provided herein include osteoarthritis, rheumatoid arthritis, multiple sclerosis, corneal ulcers, uveitis, pain and inflammatory bowel disease. More example disorders include diabetes, obesity, allergic disease, cancer, and sepsis.

In some embodiments, the compounds and compositions provided herein can be administered in combination with an additional active agent. Examples of other active agents include anti-inflammatory agents, analgesic agents, such as: opiate agonists; lipoxygenase inhibitors; cyclooxygenase inhibitors, such as cyclooxygenase-2 inhibitors; interleukin inhibitors, such as interleukin-1 receptor antagonist; NMDA antagonists; inhibitors of nitric oxide or inhibitors of the synthesis of nitric oxide; a non-steroidal anti-inflammatory agent; or a cytokine-suppressing anti-inflammatory agent, for example with a compound such as acetaminophen, aspirin, codeine, fentanyl, ibuprofen, indomethacin, ketorolac, morphine, naproxen, phenacetin, piroxicam, a steroidal analgesic, sufentanyl, sulindac, tenidap, and the like. In some embodiments, the instant compounds and/or compoistions may be administered with: a potentiator such as caffeine, an H2-antagonist (e.g., ranitidine), simethicone, aluminum or magnesium hydroxide; a decongestant such as phenylephrine, phenylpropanolamine, pseudophedrine, oxymetazoline, ephinephrine, naphazoline, xylometazoline, propylhexedrine, or levo-desoxy-ephedrine; an antitussive such as codeine, hydrocodone, caramiphen, carbetapentane, or dextromethorphan; a diuretic; and a sedating or non-sedating antihistamine.

More examples of additional active agents include (a) VLA-4 antagonists; (b) corticosteroids, such as beclomethasone, methylprednisolone, betamethasone, prednisone, prednisolone, dexamethasone, fluticasone and hydrocortisone, and corticosteroid analogs such as budesonide; (c) immunosuppressants such as cyclosporine (cyclosporine A, Sandimmune®, Neoral®), tacrolimus (FK-506, Prograf®), rapamycin (sirolimus, Rapamune®) and other FK-506 type immunosuppressants, and mycophenolate, e.g., mycophenolate mofetil (CellCept®); (d) antihistamines (H1-histamine antagonists) such as brompheniramine, chlorpheniramine, dexchlorpheniramine, triprolidine, clemastine, diphenhydramine, diphenylpyraline, tripelennamine, hydroxyzine, methdilazine, promethazine, trimeprazine, azatadine, cyproheptadine, antazoline, pheniramine pyrilamine, astemizole, terfenadine, loratadine, cetirizine, fexofenadine, descarboethoxyloratadine, and the like; (e) non-steroidal anti-asthmatics such as β2-agonists (e.g., terbutaline, metaproterenol, fenoterol, isoetharine, albuterol, bitolterol and pirbuterol), theophylline, cromolyn sodium, atropine, ipratropium bromide, leukotriene antagonists (e.g., zafirlukast, montelukast, pranlukast, iralukast, pobilukast and SKB-106,203), leukotriene biosynthesis inhibitors (zileuton, BAY-1005); (f) non-steroidal antiinflammatory agents (NSAIDs) such as propionic acid derivatives (e.g., alminoprofen, benoxaprofen, bucloxic acid, carprofen, fenbufen, fenoprofen, fluprofen, flurbiprofen, ibuprofen, indoprofen, ketoprofen, miroprofen, naproxen, oxaprozin, pirprofen, pranoprofen, suprofen, tiaprofenic acid and tioxaprofen), acetic acid derivatives (e.g., indomethacin, acemetacin, alclofenac, clidanac, diclofenac, fenclofenac, fenclozic acid, fentiazac, furofenac, ibufenac, isoxepac, oxepinac, sulindac, tiopinac, tolmetin, zidometacin and zomepirac), fenamic acid derivatives (e.g., flufenamic acid, meclofenamic acid, mefenamic acid, niflumic acid and tolfenamic acid), biphenylcarboxylic acid derivative (e.g., diflunisal and flufenisal), oxicams (e.g., isoxicam, piroxicam, sudoxicam and tenoxicam), salicylates (e.g., acetyl salicylic acid, sulfasalazine and analogs, mesalamine) and the pyrazolones (e.g., apazone, bezpiperylon, feprazone, mofebutazone, oxyphenbutazone and phenylbutazone); (g) cyclooxygenase-2 (COX-2) inhibitors such as celecoxib (Celebrex®) and rofecoxib (Vioxx®); (h) inhibitors of phosphodiesterase type IV (PDE-IV); (i) interleukin inhibitors, such as interleukin-I (IL-I) inhibitors, and chemokine receptor antagonists; j) cholesterol lowering agents such as HMG-CoA reductase inhibitors (lovastatin, simvastatin, pravastatin, fluvastatin, atorvastatin and other statins), bile acid sequestrants (e.g., cholestyramine and colestipol), nicotinic acid (niacin), fibric acid derivatives (gemfibrozil, clofibrate, fenofibrate and benzafibrate), probucol and nitroglycerin; (k) anti-diabetic agents such as insulin, sulfonylureas (e.g., glyburide, meglinatide), biguanides, e.g., metformin (Glucophage®), α-glucosidase inhibitors (acarbose), thiazolidinone compounds, e.g., rosiglitazone (Avandia®), troglitazone (Rezulin®) and pioglitazone (Actos®); (1) preparations of interferon beta (interferon β-1 α, interferon β-1 β; (m) gold compounds such as auranofin and aurothioglucose, (n) etanercept (Enbrel®), (o) antibody therapies such as orthoclone (OKT3), daclizumab (Zenapax®), basiliximab (Simulect®), infliximab (Remicade®) and D2E6 TNF antibody, (p) lubricants or emollients such as petrolatum and lanolin, (q) keratolytic agents, (r) vitamin D3 derivatives, e.g., calcipotriene or calcipotriol (Dovonex®), (s) PUVA, (t) anthralin (Drithocreme®), (u) etretinate (Tegison®) and isotretinoin, (v) multiple sclerosis therapeutic agents such as β-1 β (Betaseron®), interferon β-1 α (Avonex®), azathioprine (Imurek®, Imuran®), glatiramer acetate (Copaxone®), a glucocorticoid (e.g., prednisolone) and cyclophosphamide and (w) β3 adrenergic receptor agonists, leptin or derivatives thereof, and neuropeptide Y (e.g., NPY5) antagonists; (x) other compounds such as 5-aminosalicylic acid and prodrugs thereof; (y) DNA-alkylating agents (e.g., cyclophosphamide, ifosfamide), antimetabolites (e.g., azathioprine, 6-mercaptopurine, methotrexate, a folate antagonist, and 5-fluorouracil, a pyrimidine antagonist), microtubule disruptors (e.g., vincristine, vinblastine, paclitaxel, colchicine, nocodazole and vinorelbine), DNA intercalators (e.g., doxorubicin, daunomycin and cisplatin), DNA synthesis inhibitors such as hydroxyurea, DNA cross-linking agents, e.g., mitomycin C, and hormone therapy (e.g., tamoxifen, and flutamide).

In still other particular embodiments, compounds and compositions provided herein are administered for the treatment of rheumatoid arthritis, wherein the compounds are administered either alone or in combination with a second therapeutic agent selected from methotrexate, sulfasalazine, a COX-2 inhibitor, hydroxychloroquine, cyclosporine A, D-penicillamine, infliximab, etanercept, auranofin and aurothioglucose.

In yet other particular embodiments, the present compounds are administered for the treatment of inflammatory bowel disease wherein the compound of the invention is used alone or in combination with a second therapeutic agent selected from sulfasalazine and analogs (e.g., olsalazine) mesalamine, corticosteroids (e.g., prednisone, prednisolone) and analogs (e.g., budesonide), azathioprine, 6-mercaptopurine, cyclosporine A, methotrextate, infliximab, or an IL-1 inhibitor.

In other particular embodiments, the present methods are directed to the treatment of multiple sclerosis using a compound of the invention either alone or in combination with a second therapeutic agent selected from interferon β-1β, interferon β-1α, azathioprine, glatiramer acetate, a glucocorticoid (e.g., prednisolone), and cyclophosphamide.

EXAMPLES

The following examples, including experiments and results achieved, are provided for illustrative purposes only and are not to be construed as limiting the present invention. Where chemical structures depict atoms having an unfilled valency, it is to be understood that the valency is satisfied with one or more hydrogen atoms.

Example 1 Synthesis of N-(4-(hydroxymethyl)pyridin-2-yl)-6-(pyridin-4-yl)benzo [d]thiazol-2-amine (Compound 101, Structure 4 in Scheme I, R¹=CH₂OH, R⁴=4-pyridyl)

To a solution of 4-(((tert-butyldimethylsilyl)oxy)methyl)pyridin-2-amine (1.92 g, 8.0 mmol, 1 eq.) in anhydrous tetrahydrofuran (THF) (100 mL) was added NaH (2.25 g, 56.0 mmol, 7.0 eq) at 0° C., after stirring at room temperature for 30 min, a solution of 6-bromo-2-chlorobenzo[d]thiazole (2.0 g, 8.1 mmol, 1 eq) in THF (20 mL) was added dropwise. Then the reaction mixture was heated to 65° C. for 2 hours. After cooling, water was added, the organic layer was separated and the aqueous was extracted with EtOAc, dried and concentrated to give 6-bromo-N-(4-(((tert-butyldimethylsilyl)oxy)methyl)pyridin-2-yl)benzo[d]thiazol-2-amine (1.5 g, 37%) which was used directly without further purification. ¹H NMR (500 MHz, CDCl₃) δ 8.03 (d, J=9.0, 1H); 6.87 (d, J=2.6, 1H); 6.64 (dd, J=9.0, 2.6, 1H); 4.58 (t, J=5.2, 1H); 3.67 (s, 3H); 3.21 (td, J=7.1, 5.2, 2H); 2.31 (t, J=7.5, 2H); 1.70-1.59 (m, 4H); 1.46-1.29 (m, 10H).

To a 10 mL microwave tube was added 6-bromo-N-(4-(((tert-butyldimethylsilyl)oxy)methyl)pyridin-2-yl)benzo[d]thiazol-2-amine (400 mg, 1.03 mmol), pyridine-4-boronic acid (185 mg, 1.5 eq), K₂CO₃ (425 mg, 3.09 mmol, 3 eq), Pd(dppf)Cl₂, (25 mg, 0.03 mmol, 0.03 eq), LiCl (130 mg, 3.09 mmol, 3 eq) and 3 mL of dioxane/H₂O(4:1). The mixture was stirred at 140° C. under microwave condition for 1 h. After cooling to room temperature (rt), the mixture was concentrated in vacuo and the residue was purified by flash chromatography to give 125 mg of N-(4-(((tert-butyldimethylsilyl)oxy)methyl)pyridin-2-yl)-6-(pyridin-4-yl)benzo[d]thiazol-2-amine.

N-(4-4(Tert-butyldimethylsilyl)oxy)methyppyridin-2-yl)-6-(pyridin-4-yl)benzo[d]thiazol-2-amine (1.8 g, 3.34 mmol, 1 eq.) was dissolved in 6 N HCl/MeOH (30 mL), and the suspension was stirred at room temperature for 2 hours. After completion of the reaction, the solvent was evaporated and the residue was purified by chromatography to give 1.2 g of N-(4-(hydroxymethyl)pyridin-2-yl)-6-(pyridin-4-yl)benzo [d]thiazol-2-amine 101. ¹HNMR (DMSO-d₆, 400 MHz) δ 8.95 (d, 2H), 8.75 (s, 1H), 8.45 (d, 2H), 8.35 (d, 1H), 8.11 (d, 1H), 7.84 (d, 1H), 7.22 (s, 1H), 7.00 (d, 1H), 4.60 (s, 2H). MS (ES-API): MH⁺=335.0. HPLC t_(R)=2.20 min.

Example 2 Synthesis of 6-(pyridin-4-yl)-N-(4-(pyrrolidin-1-ylmethyl)pyridin-2-yl)benzo[d]thiazol-2-amine (Compound 102, Structure 4 in Scheme I, R¹═CH₂-pyrrolidin-1-yl, R⁴=4-pyridyl)

(2-((6-(Pyridin-4-yl)benzo[d]thiazol-2-yl)amino)pyridin-4-yl)methanol 101 (0.12 g, 0.36 mmol, 1 eq.) was dissolved in POCl3 (3 mL) under N2, and the suspension was stirred at 110° C. for 2 hours. After cooling, POCl3 was evaporated under reduced pressure and the residue was basified with sat. Na2CO3 solution, then extracted with DCM, dried and concentrated in vacuo to afford N-(4-(chloromethyppyridin-2-yl)-6-(pyridin-4-yl)benzo[d]thiazol-2-amine (80 mg, 63%) which was used directly in the next step.

A solution of N-(4-(chloromethyl)pyridin-2-yl)-6-(pyridin-4-yl)benzo[d]thiazol-2-amine (80 mg, 0.23 mmol, 1 eq.) in 1 mL dioxane was treated with 15 mg of pyrrolidine and 20 mg DIEA. The reaction mixture was stirred at 140° C. under microwave condition for 1 h. After cooling to rt, the mixture was concentrated in vacuo. The residue was washed with EtOH to afford 6-(pyridin-4-yl)-N-(4-(pyrrolidin-1-ylmethyl)pyridin-2-yl)benzo[d]thiazol-2-amine 102 without further purification (67 mg). ¹HNMR (CD₃OD, 400 MHz) δ8.83 (d, 2H), 8.60 (m, 1H), 8.54 (m, 1H), 8.46 (m, 2H), 8.10 (m, 1H), 7.92 (d, 1H), 7.52 (s, 1H), 3.37 (d, 1H), 4.53 (s, 2H), 3.62 (br s, 2H), 3.25 (m, 2H overlapping with signal from CD₃OD), 2.22 (m, 2H), 2.09 (m, 2H). MS (ES-API): MH⁺=388.1. HPLC t_(R)=2.16 min.

Examples 3-332

Compounds 103-439 were prepared in a similar fashion as described in Examples 1-2 and their structures, names, and found molecular mass ion numbers are summarized in Table 1 (Example: E.g.; Compound: Cmpd).

TABLE 1 E.g. Structure Cmpd Name [M + H]⁺ 3

103 6-(1H-pyrazol-4-yl)-N- (4-(pyrrolidin-1-ylmethyl)- pyridin-2-yl)benzo[d]- thiazol-2-amine 377.1 4

104 N-(4-(piperazin-1-yl- methyl)pyridin-2-yl)-6- (pyridin-4-yl)benzo[d]- thiazol-2-amine 403.1 5

105 1-(4-((2-((6-(pyridin-4- yl)benzo[d]thiazol-2-yl)- amino)pyridin-4-yl)- methyl)piperazin-1-yl)- ethanone 445.1 6

106 1-(4-methylpiperazin-1- yl)-2-(2-((6-(pyridin-4- yl)benzo[d]thiazol-2-yl)- amino)pyridin-4-yl)- ethanone 445.1 7

107 6-(5-methyl-1H-pyrazol- 4-yl)-N-(4-(pyrrolidin-1- ylmethyl)pyridin-2-yl)- benzo[d]thiazol-2-amine 391.1 8

108 5-(1H-pyrazol-4-yl)-N-(4- (pyrrolidin-1-ylmethyl)- pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 378.1 9

109 N-(4-morpholinopyridin- 2-yl)-6-(1H-pyrazol-4- yl)benzo[d]thiazol-2- amine 379.1 10

110 N-(4-morpholinopyridin- 2-yl)-5-(1H-pyrazol-4-yl)- thiazolo[5,4-b]pyridin- 2-amine 380.1 11

111 (2-((6-(1H-pyrazol-4-yl)- benzo[d]thiazol-2-yl)- amino)pyridin-4-yl)- methanol 324.0 12

112 N-(4-(4-(2-methoxyethyl)- piperazin-1-yl)pyridin-2- yl)-5-(1H-pyrazol-4-yl)- thiazolo[5,4-b]pyridin-2- amine 437.1 13

113 N-(4-((dimethylamino)- methyl)pyridin-2-yl)-5- (1H-pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 352.0 14

114 N-(4-(4-(2-methoxyethyl)- piperazin-1-yl)-pyridin-2- yl)-5-(pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-amine 448.1 15

115 N-(4-(isopropoxymethyl)- pyridin-2-yl)-6-(1H- pyrazol-4-yl)benzo[d]- thiazol-2-amine 366.0 16

116 N-(4-((4-(2-methoxyethyl)- piperazin-1-yl)methyl)- pyridin-2-yl)-5-(pyridin-4- yl)thiazolo[5,4-b]pyridin- 2-amine 462.2 17

117 N-(4-((4-(2-methoxyethyl)- piperazin-1-yl)methyl)- pyridin-2-yl)-5-(1H- pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 451.2 18

118 N-(4-(4-(2-methoxyethyl)- piperazin-1-yl)pyridin-2- yl)-5-(5-methyl-1H- pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 451.2 19

119 N-(4-((4-(2-methoxyethyl)- piperazin-1-yl)methyl)- pyridin-2-yl)-5-(5-methyl- 1H-pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 465.2 20

120 2-methoxy-1-(4-(2-((5- (pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-yl)- amino)pyridin-4-yl)- piperazin-1-yl)ethanone 462.1 21

121 N-(4-(4-(methylsulfonyl)- piperazin-1-yl)pyridin-2- yl)-5-(pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-amine 468.1 22

122 2-methoxy-1-(4-((2-((5- (pyridin-4-yl)thiazolo[5,4- b]pyridin-2-yl)amino)- pyridin-4-yl)methyl)- piperazin-1-yl)ethanone 476.2 23

123 2-methoxy-1-(4-(2-((6- (pyridin-4-yl)benzo[d]- thiazol-2-yl)amino)- pyridin-4-yl)piperazin- 1-yl)ethanone 461.1 24

124 N-(4-((4-(methylsulfonyl)- piperazin-1-yl)methyl)- pyridin-2-yl)-5-(pyridin- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 482.1 25

125 (S)-N-(4-((3-methoxy- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-5-(pyridin- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 419.1 26

126 (R)-N-(4-((3-methoxy- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-5-(pyridin- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 419.1 27

127 N-(4-(isopropoxymethyl)- pyridin-2-yl)-6-(pyridin- 4-yl)benzo[d]thiazol-2- amine 377.2 28

128 N-(4-(isopropoxymethyl)- pyridin-2-yl)-5-(5-methyl- 1H-pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 381.1 29

129 (S)-N-(4-((2-methyl- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-6-(pyridin- 4-yl)benzo[d]thiazol-2- amine 402.1 30

130 N-(4-(isopropoxymethyl)- pyridin-2-yl)-5-(pyridin-4- yl)thiazolo[5,4-b]pyridin- 2-amine 378.1 31

131 5-(1H-pyrazol-4-yl)-N-(4- (4-(3,3,3-trifluoropropyl)- piperazin-1-yl)pyridin-2- yl)thiazolo[5,4-b]pyridin- 2-amine 475.2 32

132 N-(4-(4-(isopropylsul- fonyl)piperazin-1-yl)- pyridin-2-yl)-5-(1H- pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 485.1 33

133 N-(4-(4-(isopropylsul- fonyl)piperazin-1-yl)- pyridin-2-yl)-5-(pyridin- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 496.0 34

134 2-methoxy-1-(4-(2-((5- (pyrimidin-5-yl)thiazolo- [5,4-b]pyridin-2-yl)- amino)pyridin-4-yl)- piperazin-1-yl)ethanone 463.1 35

135 N-(4-(4-(methylsulfonyl)- piperazin-1-yl)pyridin-2- yl)-5-(pyrimidin-5-yl)- thiazolo[5,4-b]pyridin-2- amine 469.1 36

136 2-((6-methyl-4-(pyrrolidin- 3-ylamino)pyridin-2-yl)- amino)benzo[d]thiazole- 6-carbonitrile 351.1 37

137 N-(4-(pyrrolidin-1- ylmethyl)pyridin-2-yl)-6- (4H-1,2,4-triazol-4-yl)- benzo[d]thiazol-2-amine 378.1 38

143 2-((4-(4-(2-methoxyethyl)- piperazin-1-yl)pyridin-2- yl)amino)benzo[d]thiazole- 6-carbonitrile 394.95 39

144 5-(5-methyl-1H-pyrazol-4- yl)-N-(4-((tetrahydro-2H- pyran-4-yl)oxy)pyridin-2- yl)thiazolo[5,4-b]pyridin- 2-amine 409.1 40

146 N-(4-(4-(2-methoxyethyl)- piperazin-1-yl)pyridin-2- yl)-5-(pyridazin-4-yl)- thiazolo[5,4-b]pyridin-2- amine 449.1 41 147 1-(4-(2-((5-ethylthiazolo- 413.1 [5,4-b]pyridin-2-yl)amino)- pyridin-4-yl)piperazin-1- yl)-2-methoxyethanone 42

148 1-((2-((5-(pyridin-4-yl)- thiazolo[5,4-b]pyridin-2- yl)amino)pyridin-4-yl)- methyl)pyrrolidin-2-one 403.1 43

149 1-((2-((5-(1H-pyrazol-4- yl)thiazolo[5,4-b]pyridin- 2-yl)amino)pyridin-4- yl)methyl)pyrrolidin- 2-one 392.1 44

150 2-methoxy-1-(4-(2-((5- (pyridin-4-yl)thiazolo[5,4- b]pyridin-2-yl)amino)- pyridin-4-yl)piperidin-1- yl)ethanone 461.1 45

151 N²-(benzo[d]thiazol-2-yl)- N⁴-(bicyclo[2.2.1]heptan- 2-yl)-N⁶-((R)-pyrrolidin-3- yl)-1,3,5-triazine-2,4,6- triamine 46

152 N²-(bicyclo[2.2.1]heptan- 2-yl)-N⁴-(6-methoxy- benzo[d]thiazol-2-yl)-N⁶- (pyrrolidin-3-yl)-1,3,5- triazine-2,4,6-triamine 47

153 N²-(bicyclo[2.2.1]heptan- 2-yl)-N⁴-(6-chlorobenzo- [d]thiazol-2-yl)-N⁶- (pyrrolidin-3-yl)-1,3,5- triazine-2,4,6-triamine 48

154 2-((4-(bicyclo[2.2.1]heptan- 2-ylamino)-6-(pyrrolidin-3- ylamino)-1,3,5-triazin-2- yl)amino)benzo[d]thiazole- 6-carboxylic acid 49

155 N²-(benzo[d]thiazol-2-yl)- N⁴-((1R,4S)-bicyclo- [2.2.1]heptan-2-yl)-N⁶- ((R)-pyrrolidin-3-yl)- pyrimidine-2,4,6- triamine 50

156 2-((6-methoxybenzo- [d]thiazol-2-yl)amino)- N-(pyrrolidin-3-yl)- isonicotinamide 370.1 51

157 2-((6-cyanobenzo[d]- thiazol-2-yl)amino)-N- (pyrrolidin-3-yl)iso- nicotinamide 365.0 52

158 2-((6-chlorobenzo[d]- thiazol-2-yl)amino)-N- (pyrrolidin-3-yl)-iso- nicotinamide 374.0 53

159 (R)-2-((2-((4-methylamino)- 6-(pyrrolidin-3-ylamino)- 1,3,5-triazin-2-yl)amino)- benzo[d]thiazol-6-yl)oxy)- ethanol 54

160 (S)-2-((6-methoxybenzo- [d]thiazol-2-yl)amino)- N-(pyrrolidin-3-yl)iso- nicotinamide 370.0 55

161 (S)-2-((6-cyanobenzo- [d]thiazol-2-yl)amino)- N-(pyrrolidin-3-yl)iso- nicotinamide 365.0 56 162 (R)-2-((6-cyanobenzo- 365.0 [d]thiazol-2-yl)amino)-N- (pyrrolidin-3-yl)iso- nicotinamide 57

163 (S)-2-((6-chlorobenzo- [d]thiazol-2-yl)amino)- N-(pyrrolidin-3-yl)iso- nicotinamide 373.9 58

164 (R)-2-((6-chlorobenzo- [d]thiazol-2-yl)amino)- N-(pyrrolidin-3-yl)iso- nicotinamide 374.0 59

165 N-(2-aminoethyl)-2-((6- cyanobenzo[d]thiazol-2- yl)amino)isonicotinamide 339.0 60

166 N-(4-aminobutyl)-2-((6- cyanobenzo[d]thiazol-2- yl)amino)isonicotinamide 367.1 61

167 2-((6-cyanobenzo[d]thiazol- 2-yl)amino)-N-(pyrrolidin- 3-ylmethyl)isonicotinamide 379.1 62

168 2-((6-cyanobenzo[d]thiazol- 2-yl)amino)-N-(piperidin-3- yl)isonicotinamide 379.1 63

169 2-((6-cyanobenzo[d]thiazol- 2-yl)amino)-N-(pyrrolidin- 2-ylmethyl)isonicotinamide 379.0 64

170 2-((4-(3-aminopiperidine- 1-carbonyl)pyridin-2- yl)amino)benzo[d]thiazole- 6-carbonitrile 379.0 65

171 N²-(6-methoxybenzo- [d]thiazol-2-yl)-N⁴- (pyrrolidin-3-yl)- pyridine-2,4-diamine 342.0 66

172 N²-(6-chlorobenzo[d]- thiazol-2-yl)-N⁴- (pyrrolidin-3-yl)pyridine- 2,4-diamine 346.0 67

173 (S)-2-((6-bromobenzo- [d]thiazol-2-yl)amino)- N-(pyrrolidin-3-yl)iso- nicotinamide 418.0 68

174 (S)-2-((6-cyanobenzo- [d]thiazol-2-yl)amino)- N-methyl-N-(pyrrolidin-3- yl)isonicotinamide 379.0 69

175 2-((4-(pyrrolidin-3- ylamino)pyridin-2-yl)- amino)benzo[d]thiazole- 6-carbonitrile 337.1 70

176 (S)-2-((6-(pyridin-4-yl)- benzo[d]thiazol-2-yl)- amino)-N-(pyrrolidin-3- yl)isonicotinamide 417.1 71

177 (S)-2-((6-(pyridin-3-yl)- benzo[d]thiazol-2-yl)- amino)-N-(pyrrolidin-3- yl)isonicotinamide 417.1 72

178 (S)-2-((6-(1-methyl-1H- pyrazol-4-yl)benzo[d]- thiazol-2-yl)amino)-N- (pyrrolidin-3-yl)iso- nicotinamide 420.1 73

179 (S)-2-((6-(1H-pyrazol-4- yl)benzo[d]thiazol-2-yl)- amino)-N-(pyrrolidin-3- yl)isonicotinamide 406.2 74

180 2-((7-methoxybenzo[d]- thiazol-2-yl)amino)-N- (pyrrolidin-3-yl)iso- nicotinamide 370.0 75

181 6-bromo-N-(4-(pyrrolidin- 1-ylmethyl)pyridin-2-yl)- benzo[d]thiazol-2-amine 391.0 76

182 (S)-2-((6-cyanobenzo[d]- thiazol-2-yl)amino)-6- methyl-N-(pyrrolidin-3- yl)isonicotinamide 379.1 77

183 (S)-2-((7-cyanobenzo- [d]thiazol-2-yl)amino)- N-(pyrrolidin-3-yl)iso- nicotinamide 365.0 78

184 2-((4-(cyclopentylamino)- pyridin-2-yl)amino)benzo- [d]thiazole-6-carbonitrile 336.0 79

185 1-(4-((2-((6-bromobenzo- [d]thiazol-2-yl)amino)- pyridin-4-yl)methyl)- piperazin-1-yl)ethanone 445.9 80

186 1-(4-((2-((6-(1H-pyrazol- 4-yl)benzo[d]thiazol-2- yl)amino)pyridin-4-yl)- methyl)piperazin-1-yl)- ethanone 81

187 N-(4-(piperidin-1-yl- methyl)pyridin-2-yl)-6- (1H-pyrazol-4-yl)benzo- [d]thiazol-2-amine 82

188 2-((5-methyl-4-(pyrrolidin- 3-ylamino)pyridin-2-yl)- amino)benzo[d]thiazole- 6-carbonitrile 351.1 83

189 6-(pyridin-3-yl)-N-(4- (pyrrolidin-1-ylmethyl)- pyridin-2-yl)benzo[d]- thiazol-2-amine 84

190 1-((2-((6-bromobenzo- [d]thiazol-2-yl)amino)- pyridin-4-yl)methyl)- piperidin-4-ol 85

191 2-(((2-((6-bromobenzo[d]- thiazol-2-yl)amino)pyridin- 4-yl)methyl)(methyl)- amino)ethanol 86

192 6-bromo-N-(4-((dimethyl- amino)methyl)pyridin- 2-yl)benzo[d]thiazol-2- amine 87

193 6-((6-(1H-pyrazol-4-yl)- benzo[d]thiazol-2-yl)- amino)-N-(pyrrolidin-3- yl)picolinamide 406.1 88

194 6-(1H-pyrazol-5-yl)-N-(4- (pyrrolidin-1-ylmethyl)- pyridin-2-yl)benzo[d]- thiazol-2-amine 89

195 2-((4-((2-aminopropyl)- amino)pyridin-2-yl)- amino)benzo[d]thiazole- 6-carbonitrile 325.1 90

196 2-((4-((1-aminopropan- 2-yl)amino)pyridin-2- yl)amino)benzo[d]- thiazole-6-carbonitrile 325.1 91

197 N-((2-((6-(pyridin-4-yl)- benzo[d]thiazol-2-yl)- amino)pyridin-4-yl)- methyl)methanesulfon- amide 412.1 92

198 N-(4-(piperidin-1- ylmethyl)pyridin-2-yl)- 6-(pyridin-4-yl)benzo- [d]thiazol-2-amine 402.1 93

199 N-(4-((dimethylamino)- methyl)pyridin-2-yl)-6- (pyridin-4-yl)benzo[d]- thiazol-2-amine 362.1 94

200 4-((6-(1H-pyrazol-4-yl)- benzo[d]thiazol-2-yl)- amino)-N-(pyrrolidin-3- yl)picolinamide 406.1 95

201 6-(6-methoxypyridin-3- yl)-N-(4-(pyrrolidin-1- ylmethyl)pyridin-2- yl)benzo[d]thiazol-2- amine 418.2 96

202 N-(4-(4-methylpiperazin- 1-yl)pyridin-2-yl)-6- (pyridin-4-yl)benzo[d]- thiazol-2-amine 403.1 97

203 6-(pyrimidin-5-yl)-N-(4- (pyrrolidin-1-ylmethyl)- pyridin-2-yl)benzo[d]- thiazol-2-amine 389.1 98

204 N-(4-((4-methylpiperazin- 1-yl)methyl)pyridin-2-yl)- 6-(pyridin-4-yl)benzo[d]- thiazol-2-amine 417.1 99

205 6-(2-methylpyridin-4-yl)- N-(4-(pyrrolidin-1-yl- methyl)pyridin-2-yl)- benzo[d]thiazol-2-amine 402.1 100

206 2-(2-((6-(pyridin-4-yl)- benzo[d]thiazol-2-yl)- amino)pyridin-4-yl)acetic acid 363.0 101

207 1,1-dimethyl-3-((2-((6- (pyridin-4-yl)benzo[d]- thiazol-2-yl)amino)- pyridin-4-yl)methyl)urea 405.1 102

208 6-(3-methoxypyridin-4- yl)-N-(4-(pyrrolidin-1- ylmethyl)pyridin-2-yl)- benzo[d]thiazol-2-amine 418.1 103

209 6-(2-methoxypyridin-4- yl)-N-(4-(pyrrolidin-1-yl- methyl)pyridin-2-yl)benzo- [d]thiazol-2-amine 418.1 104

210 6-(2-chloropyridin-4-yl)- N-(4-(pyrrolidin-1- ylmethyl)pyridin-2- yl)benzo[d]thiazol-2- amine 422.0 105

211 6-(3-methylpyridin-4-yl)- N-(4-(pyrrolidin-1-yl- methyl)pyridin-2-yl)- benzo[d]thiazol-2-amine 402.1 106

212 2-(2-((6-(pyridin-4-yl)- benzo[d]thiazol-2-yl)- amino)pyridin-4-yl)-N- (2-(pyrrolidin-1-yl)ethyl)- acetamide 459.1 107

213 N-(4-((methylamino)- methyl)pyridin-2-yl)-6- (pyridin-4-yl)benzo[d]- thiazol-2-amine 348.1 108

214 3-(2-((4-(pyrrolidin-1- ylmethyl)pyridin-2- yl)amino)benzo[d]- thiazol-6-yl)benzonitrile 412.1 109

215 N-(4-morpholinopyridin- 2-yl)-6-(pyridin-4-yl)- benzo[d]thiazol-2-amine 390.1 110

216 N-(4-((3-methoxy- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-6-(pyridin- 4-yl)benzo[d]thiazol-2- amine 418.1 111

217 N-(4-((4-(methylsulfonyl)- piperazin-1-yl)methyl)- pyridin-2-yl)-6-(pyridin- 4-yl)benzo[d]thiazol-2- amine 481.0 112

218 6-(2-methoxypyrimidin- 5-yl)-N-(4-(pyrrolidin- 1-ylmethyl)pyridin-2-yl)- benzo[d]thiazol-2-amine 419.1 113

219 3-(piperidin-1-yl)-N-((2- ((6-(pyridin-4-yl)benzo- [d]thiazol-2-yl)amino)- pyridin-4-yl)methyl)- propanamide 473.2 114

220 6-(benzo[c][1,2,5]oxa- diazol-5-yl)-N-(4- (pyrrolidin-1-ylmethyl)- pyridin-2-yl)benzo[d]- thiazol-2-amine 429.1 115

221 1-methyl-4-(2-((6-(pyridin- 4-yl)benzo[d]thiazol-2- yl)amino)pyridin-4-yl)- piperazin-2-one 417.1 116

222 2-(4-(2-((6-(pyridin-4-yl)- benzo[d]thiazol-2-yl)- amino)pyridin-4-yl)- piperazin-1-yl)ethanol 433.1 117

223 N-methyl-4-((2-((6- (pyridin-4-yl)benzo[d]- thiazol-2-yl)amino)- pyridin-4-yl)methyl)- piperazine-1-carboxamide 460.2 118

224 Methyl 2-(2-((6-(pyridin- 4-yl)benzo[d]thiazol-2- yl)amino)pyridin-4-yl)- acetate 377.1 119

225 2-(methyl(2-((6-(pyridin- 4-yl)benzo[d]thiazol-2- yl)amino)pyridin-4- yl)amino)ethanol 378.1 120

226 1-((2-((6-(pyridin-4-yl)- benzo[d]thiazol-2-yl)- amino)pyridin-4-yl)- methyl)pyrrolidin-3-ol 404.1 121

227 N-(4-((4-methylpiperazin- 1-yl)methyl)pyridin-2-yl)- 6-(pyrimidin-5-yl)benzo- [d]thiazol-2-amine 418.2 123

228 2-((2-((6-(pyridin-4-yl)- benzo[d]thiazol-2-yl)- amino)pyridin-4-yl)- amino)ethanol 364.1 124

229 7-methyl-6-(pyridin-4- yl)-N-(4-(pyrrolidin-1- ylmethyl)pyridin-2-yl)- benzo[d]thiazol-2-amine 402.1 125

230 5-methyl-6-(pyridin-4- yl)-N-(4-(pyrrolidin-1-yl- methyl)pyridin-2-yl)benzo- [d]thiazol-2-amine 402.1 126

231 N-(pyridin-2-yl)-6-(pyridin- 4-yl)benzo[d]thiazol-2- amine 305.0 127

232 6-(2-aminopyrimidin-5- yl)-N-(4-(pyrrolidin-1- ylmethyl)pyridin-2-yl)- benzo[d]thiazol-2-amine 404.1 128

233 2-(2-((6-(pyridin-4-yl)- benzo[d]thiazol-2-yl)- amino)pyridin-4-yl)-1- (pyrrolidin-1-yl)ethanone 416.1 129

234 N-(4-(pyrrolidin-1-yl- methyl)pyridin-2-yl)-6- (2-(trifluoromethyl)- pyridin-4-yl)benzo[d]- thiazol-2-amine 456.1 130

235 1-methyl-N-((2-((6- (pyridin-4-yl)benzo[d]- thiazol-2-yl)amino)- pyridin-4-yl)methyl)- pyrrolidine-2-carboxamide 445.1 131

236 5-(pyridin-4-yl)-N-(4- (pyrrolidin-1-ylmethyl)- pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 389.1 132

237 5-(pyrimidin-5-yl)-N-(4- (pyrrolidin-1-ylmethyl)- pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 390.1 133

238 N-(4-(aminomethyl)- pyridin-2-yl)-6-(pyrimidin- 5-yl)benzo[d]thiazol-2- amine 335.1 134

239 N-methyl-2-(2-((6- (pyridin-4-yl)benzo[d]- thiazol-2-yl)amino)pyridin- 4-yl)acetamide 376.1 135

240 N-(2-hydroxyethyl)-2-(2- ((6-(pyridin-4-yl)benzo- [d]thiazol-2-yl)amino)- pyridin-4-yl)acetamide 406.0 136

242 N-(4-(pyrrolidin-1-yl- methyl)pyridin-2-yl)-6- (1H-1,2,4-triazol-1-yl)- benzo[d]thiazol-2-amine 378.1 137

243 1-(3-hydroxypyrrolidin- 1-yl)-2-(2-((6-(pyridin-4- yl)benzo[d]thiazol-2-yl)- amino)pyridin-4-yl)- ethanone 432.0 138

244 N-((2-((6-(pyrimidin- 5-yl)benzo[d]thiazol-2- yl)amino)pyridin-4-yl)- methyl)methanesulfon- amide 413.0 139

245 N-(4-morpholinopyridin- 2-yl)-6-(4H-1,2,4-triazol- 4-yl)benzo[d]thiazol-2- amine 380.1 140

246 N-(4-(4-methylpiperazin- 1-yl)pyridin-2-yl)-6-(4H- 1,2,4-triazol-4-yl)benzo- [d]thiazol-2-amine 393.2 141

247 N-(4-(piperazin-1-yl)- pyridin-2-yl)-6-(pyridin- 4-yl)benzo[d]thiazol-2- amine 389.1 142

248 N-(4-(4-methylpiperazin- 1-yl)pyridin-2-yl)-5-(1H- pyrazol-4-yl)thiazolo[5,4- b]pyridin-2-amine 393.0 143

249 N-(4-(piperazin-1-yl)- pyridin-2-yl)-5-(1H- pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 379.1 144

250 6-(1H-imidazol-1-yl)-N- (4-(pyrrolidin-1-ylmethyl)- pyridin-2-yl)benzo[d]- thiazol-2-amine 377.2 145

251 6-(5-methyl-1H-pyrazol- 4-yl)-N-(4-morpholino- pyridin-2-yl)benzo[d]- thiazol-2-amine 393.1 146

252 6-(5-methyl-1H-pyrazol- 4-yl)-N-(4-(4-methyl- piperazin-1-yl)pyridin- 2-yl)benzo[d]thiazol-2- amine 406.1 147

253 N-(4-(piperazin-1-yl)- pyridin-2-yl)-5-(pyridin- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 390.1 148

254 N-(4-(pyrrolidin-3- ylamino)pyridin-2-yl)-6- cyanobenzo[d]thiazol-2- amine 149

255 N-(4-(4-methylpiperazin- 1-yl)pyridin-2-yl)-6-(1H- pyrazol-4-yl)benzo[d]- thiazol-2-amine 392.1 150

256 N-(4-morpholinopyridin- 2-yl)-5-(pyridin-4-yl)- thiazolo[5,4-b]pyridin-2- amine 391.0 151

257 N-(4-(4-methylpiperazin- 1-yl)pyridin-2-yl)-5- (pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-amine 404.0 152

258 N-(4-(piperazin-1-yl)- pyridin-2-yl)-6-(1H- pyrazol-4-yl)benzo[d]- thiazol-2-amine 378.0 153

259 6-(pyridazin-4-yl)-N-(4- (pyrrolidin-1-ylmethyl)- pyridin-2-yl)benzo[d]- thiazol-2-amine 389.0 154

260 N-(4-((methylamino)- methyl)pyridin-2-yl)-6- (1H-pyrazol-4-yl)benzo- [d]thiazol-2-amine 337.0 155

261 N-(4-((dimethylamino)- methyl)pyridin-2-yl)-6- (1H-pyrazol-4-yl)benzo- [d]thiazol-2-amine 351.1 156

262 N-(pyrazin-2-yl)-6- (pyridin-4-yl)benzo[d]- thiazol-2-amine 306.0 157

263 N-(4-(azetidin-1-ylmethyl)- pyridin-2-yl)-6-(1H- pyrazol-4-yl)benzo[d]- thiazol-2-amine 363.0 158

264 N-(4-(4-methyl-1,4- diazepan-1-yl)pyridin- 2-yl)-5-(1H-pyrazol-4- yl)thiazolo[5,4-b]pyridin- 2-amine 407.1 159

265 N-(4-(4-benzylpiperazin- 1-yl)pyridin-2-yl)-5-(1H- pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 469.1 160

266 5-(2-((4-(pyrrolidin-1- ylmethyl)pyridin-2-yl)- amino)thiazolo[5,4-b]- pyridin-5-yl)pyrimidine- 2-carbonitrile 415.0 161

267 1-(4-(2-((5-(1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)piperazin- 1-yl)-2-(dimethylamino)- ethanone 464.0 162

268 2-hydroxy-N-((2-((6- (pyridin-4-yl)benzo[d]- thiazol-2-yl)amino)- pyridin-4-yl)methyl)- acetamide 392.0 163

269 2-(4-(2-((5-(1H-pyrazol-4- yl)thiazolo[5,4-b]pyridin- 2-yl)amino)pyridin-4-yl)- piperazin-1-yl)ethanol 423.1 164

270 1-(4-(2-((5-(1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)piperazin- 1-yl)-2-methoxyethanone 451.1 165

271 5-(2-((4-(pyrrolidin-1- ylmethyl)pyridin-2-yl)- amino)benzo[d]thiazol- 6-yl)pyrimidine-2- carbonitrile 414.0 166

272 (2-((5-(1H-pyrazol-4- yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)methanol 325.0 167

273 N²-(6-(pyridin-4-yl)- benzo[d]thiazol-2-yl)- pyridine-2,6-diamine 320.0 168

274 6-(1H-pyrrol-3-yl)- N-(4-(pyrrolidin-1- ylmethyl)pyridin-2- yl)benzo[d]thiazol- 2-amine 376.1 169

275 1-(4-(2-((5-(1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)piperazin- 1-yl)-2-hydroxyethanone 437.1 170

276 N-(4-((methylamino)- methyl)pyridin-2-yl)-5- (1H-pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 338.0 171

277 N-(4-(aminomethyl)- pyridin-2-yl)-5-(1H- pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 324.0 172

278 1-(2-((6-(1H-pyrazol-4- yl)benzo[d]thiazol-2- yl)amino)pyridin-4-yl)- ethanol 338.0 173

279 N-(4-(4-(methylsulfonyl)- piperazin-1-yl)pyridin-2- yl)-5-(1H-pyrazol-4-yl)- thiazolo[5,4-b]pyridin-2- amine 457.1 174

280 2-(2-((6-(1H-pyrazol-4- yl)benzo[d]thiazol-2- yl)amino)pyridin-4-yl)- propan-2-ol 352.0 175

281 N-(4-(methoxymethyl)- pyridin-2-yl)-6-(1H- pyrazol-4-yl)benzo[d]- thiazol-2-amine 338.0 176

282 1-(4-(2-((5-(1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)piperazin- 1-yl)-3-(dimethylamino)- propan-1-one 478.2 177

283 (2-((5-(1H-pyrazol-4-yl)- thiazolo[5,4-b]pyridin-2- yl)amino)-3-fluoropyridin- 4-yl)methanol 343.0 178

284 1-(4-(2-((5-(1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)piperazin- 1-yl)-3-(pyrrolidin-1-yl)- propan-1-one 504.2 179

285 N-(4-((dimethylamino)- methyl)pyridin-2-yl)-6- (5-methyl-1H-pyrazol- 4-yl)benzo[d]thiazol-2- amine 365.1 180

286 6-(5-methyl-1H-pyrazol- 4-yl)-N-(4-((methyl- amino)methyl)pyridin- 2-yl)benzo[d]thiazol- 2-amine 351.1 181

287 N-(4-(aminomethyl)- pyridin-2-yl)-6-(5- methyl-1H-pyrazol- 4-yl)benzo[d]thiazol- 2-amine 337.0 182

288 6-(5-methyl-1H-pyrazol- 4-yl)-N-(4-(piperidin-1- ylmethyl)pyridin-2-yl)- benzo[d]thiazol-2-amine 405.1 183

289 6-(5-methyl-1H-pyrazol- 4-yl)-N-(4-(morpholino- methyl)pyridin-2-yl)- benzo[d]thiazol-2-amine 407.2 184

290 N-(4-((dimethylamino)- methyl)pyridin-2-yl)- 5-(5-methyl-1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 366.1 185

291 5-(5-methyl-1H-pyrazol- 4-yl)-N-(4-(piperidin- 1-ylmethyl)pyridin-2- yl)thiazolo[5,4-b]pyridin- 2-amine 406.1 186

292 5-(5-methyl-1H-pyrazol- 4-yl)-N-(4-((2-methyl- pyrrolidin-1-yl)methyl)- pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 406.1 187

293 N-(4-(isoindolin-2-yl- methyl)pyridin-2-yl)- 5-(5-methyl-1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 440.1 188

294 N-(4-((3-methoxy- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-5-(5- methyl-1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 422.2 189

295 5-(5-methyl-1H-pyrazol- 4-yl)-N-(4-(morpholino- methyl)pyridin-2-yl)- thiazolo[5,4-b]pyridin- 2-amine 408.1 190

296 N-(4-(aminomethyl)- pyridin-2-yl)-6-(1H- pyrazol-4-yl)benzo[d]- thiazol-2-amine 323.1 191

297 5-(5-methyl-1H-pyrazol- 4-yl)-N-(4-((methyl- amino)methyl)pyridin- 2-yl)thiazolo[5,4-b]- pyridin-2-amine 352.1 192

298 N-(4-(azepan-1-ylmethyl)- pyridin-2-yl)-5-(5-methyl- 1H-pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 420.1 193

299 N-(4-(((1S,4R)-bicyclo- [2.2.1]heptan-2-ylamino)- methyl)pyridin-2-yl)-5- (5-methyl-1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 432.2 194

300 5-(5-methyl-1H-pyrazol- 4-yl)-N-(4-((3-phenyl- pyrrolidin-1-yl)methyl)- pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 468.1 195

301 N-(4-(azepan-1-ylmethyl)- pyridin-2-yl)-6-(5-methyl- 1H-pyrazol-4-yl)benzo[d]- thiazol-2-amine 419.2 196

302 6-(5-methyl-1H-pyrazol- 4-yl)-N-(4-((2-methyl- pyrrolidin-1-yl)methyl)- pyridin-2-yl)benzo[d]- thiazol-2-amine 405.2 197

303 N-(4-(isoindolin-2-yl- methyl)pyridin-2-yl)-6- (5-methyl-1H-pyrazol- 4-yl)benzo[d]thiazol-2- amine 439.1 198

304 N-(4-((3-methoxy- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-6-(5- methyl-1H-pyrazol-4- yl)benzo[d]thiazol- 2-amine 421.2 199

305 1-((2-((6-(5-methyl-1H- pyrazol-4-yl)benzo[d]- thiazol-2-yl)amino)- pyridin-4-yl)methyl)- pyrrolidin-3-ol 407.1 200

306 N-(4-(azetidin-1-yl- methyl)pyridin-2-yl)-5- (5-methyl-1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 378.1 201

307 1-((2-((5-(5-methyl-1H- pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-yl)- amino)pyridin-4-yl)- methyl)pyrrolidin-3-ol 408.1 202

308 N-(4-(azetidin-1-yl- methyl)pyridin-2-yl)-6- (5-methyl-1H-pyrazol- 4-yl)benzo[d]thiazol-2- amine 377.1 203

309 6-(5-methyl-1H-pyrazol- 4-yl)-N-(4-((3-phenyl- pyrrolidin-1-yl)methyl)- pyridin-2-yl)benzo[d]- thiazol-2-amine 467.1 204

310 N-(4-((4-(2-methoxy- ethyl)piperazin-1-yl)- methyl)pyridin-2-yl)- 6-(5-methyl-1H-pyrazol- 4-yl)benzo[d]thiazol-2- amine 464.1 205

311 N-(4-((4-(2-methoxy- ethyl)piperazin-1-yl)- methyl)pyridin-2-yl)-6- (pyridin-4-yl)benzo[d]- thiazol-2-amine 461.2 206

312 N-(4-((4-(2-methoxy- ethyl)piperazin-1-yl)- methyl)pyridin-2-yl)- 6-(1H-pyrazol-4-yl)- benzo[d]thiazol-2- amine 450.2 207

313 6-(5-methyl-1H- pyrazol-4-yl)-N- (4-((4-(methylsulfonyl)- piperazin-1-yl)methyl)- pyridin-2-yl)benzo[d]- thiazol-2-amine 484.0 208

314 N-(4-(aminomethyl)- pyridin-2-yl)-5-(5- methyl-1H-pyrazol-4- yl)thiazolo[5,4-b]- pyridin-2-amine 338.1 209

315 N-(4-((1S,4R)-2- azabicyclo[2.2.1]- heptan-2-ylmethyl)- pyridin-2-yl)-5-(5- methyl-1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 418.1 210

316 N-(4-(4-(2-methoxy- ethyl)piperazin-1- yl)pyridin-2-yl)-6- (5-methyl-1H-pyrazol- 4-yl)benzo[d]thiazol- 2-amine 450.1 211

317 2-methoxy-1-(4-(2-((6- (5-methyl-1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)piperazin- 1-yl)ethanone 465.0 212

318 N-(4-((1S,4R)-2- azabicyclo[2.2.1]heptan- 2-ylmethyl)pyridin-2-yl)- 6-(5-methyl-1H-pyrazol- 4-yl)benzo[d]thiazol-2- amine 213

319 N-(4-(((1S,4R)-bicyclo- [2.2.1]heptan-2-ylamino)- methyl)pyridin-2-yl)-6- (5-methyl-1H-pyrazol- 4-yl)benzo[d]thiazol-2- amine 214

320 N-(4-(4-(2-methoxy- ethyl)piperazin-1-yl)- pyridin-2-yl)-6-(1H- pyrazol-4-yl)benzo[d]- thiazol-2-amine 436.1 215

321 N-(4-((3,3-dimethyl- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-5-(5- methyl-1H-pyrazol-4- yl)thiazolo[5,4-b]pyridin- 2-amine 420.2 216

322 N-(4-(4-(2-methoxy- ethyl)piperazin-1- yl)pyridin-2-yl)-6- (pyridin-4-yl)benzo[d]- thiazol-2-amine 447.1 217

323 5-(5-methyl-1H-pyrazol- 4-yl)-N-(4-(4-(methyl- sulfonyl)piperazin-1- yl)pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 471.1 218

324 N-(4-((3,3-dimethyl- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-6-(5- methyl-1H-pyrazol-4- yl)benzo[d]thiazol-2- amine 419.2 219

325 2-methoxy-1-(4-((2-((6- (5-methyl-1H-pyrazol- 4-yl)benzo[d]thiazol-2- yl)amino)pyridin-4- yl)methyl)piperazin- 1-yl)ethanone 478.2 220

326 6-(1H-pyrazol-4-yl)-N- (4-((pyridin-3-yloxy)- methyl)pyridin-2-yl)- benzo[d]thiazol-2-amine 401.0 221

327 N-(4-(4-(methylsulfonyl)- piperazin-1-yl)pyridin- 2-yl)-6-(pyridin-4-yl)- benzo[d]thiazol-2-amine 467.1 222

328 N-(4-(4-(methylsulfonyl)- piperazin-1-yl)pyridin- 2-yl)-6-(1H-pyrazol-4- yl)benzo[d]thiazol-2- amine 456.1 223

329 N-(4-((4-(methylsulfonyl)- piperazin-1-yl)methyl)- pyridin-2-yl)-6-(1H- pyrazol-4-yl)benzo[d]- thiazol-2-amine 470.1 224

330 N-(4-((4-(methylsulfonyl)- piperazin-1-yl)methyl)- pyridin-2-yl)-5-(1H- pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 471.1 225

331 2-methoxy-1-(4-(2-((6- (5-methyl-1H-pyrazol-4- yl)benzo[d]thiazol-2- yl)amino)pyridin-4-yl)- piperazin-1-yl)ethanone 464.2 226

332 2-methoxy-1-(4-((2-((6- (pyridin-4-yl)benzo[d]- thiazol-2-yl)amino)- pyridin-4-yl)methyl)- piperazin-1-yl)ethanone 475.2 227

334 1-(4-((2-((6-(1H-pyrazol- 4-yl)benzo[d]thiazol-2- yl)amino)pyridin-4- yl)methyl)piperazin-1- yl)-2-methoxyethanone 464.2 228

335 2-methoxy-1-(4-((2-((5- (5-methyl-1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)methyl)- piperazin-1-yl)ethanone 479.2 229

336 1-(4-((2-((5-(1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)methyl)- piperazin-1-yl)-2- methoxyethanone 465.2 230

337 6-(5-methyl-1H-pyrazol- 4-yl)-N-(4-(4-(methyl- sulfonyl)piperazin-1- yl)pyridin-2-yl)benzo[d]- thiazol-2-amine 470.1 231

338 1-(4-(2-((6-(1H-pyrazol- 4-yl)benzo[d]thiazol-2- yl)amino)pyridin-4- yl)piperazin-1-yl)-2- methoxyethanone 450.1 232

339 4-(2-((5-(1H-pyrazol-4- yl)thiazolo[5,4-b]pyridin- 2-yl)amino)pyridin-4-yl)- 1-methylpiperazin-2-one 407.1 233

340 5-(5-methyl-1H-pyrazol- 4-yl)-N-(4-((4-(methyl- sulfonyl)piperazin-1- yl)methyl)pyridin-2- yl)thiazolo[5,4-b]pyridin- 2-amine 485.1 234

341 6-(5-methyl-1H-pyrazol- 4-yl)-N-(4-(piperazin-1- yl)pyridin-2-yl)benzo[d]- thiazol-2-amine 235

342 1-((2-((6-(1H-pyrazol-4- yl)benzo[d]thiazol-2- yl)amino)pyridin-4- yl)methyl)pyrrolidin-3- ol 393.1 236

343 (R)-6-(5-methyl-1H- pyrazol-4-yl)-N-(4-((2- methylpyrrolidin-1- yl)methyl)pyridin-2- yl)benzo[d]thiazol-2- amine 405.1 237

344 (R)-5-(5-methyl-1H- pyrazol-4-yl)-N-(4- ((2-methylpyrrolidin- 1-yl)methyl)pyridin- 2-yl)thiazolo[5,4-b]- pyridin-2-amine 406.1 238

345 (S)-N-(4-((3-methoxy- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-6-(5- methyl-1H-pyrazol- 4-yl)benzo[d]thiazol-2- amine 421.1 239

346 (R)-N-(4-((3-methoxy- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-6-(5- methyl-1H-pyrazol-4- yl)benzo[d]thiazol-2- amine 421.1 240

347 (S)-N-(4-((3-methoxy- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-5-(5- methyl-1H-pyrazol-4- yl)thiazolo[5,4-b]- pyridin-2-amine 422.1 241

348 (R)-N-(4-((2-methyl- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-5-(pyridin- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 403.2 242

349 N-(4-(isopropoxymethyl)- pyridin-2-yl)-5-(1H- pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 367.0 243

350 (S)-6-(5-methyl-1H- pyrazol-4-yl)-N-(4-((2- methylpyrrolidin-1- yl)methyl)pyridin-2- yl)benzo[d]thiazol-2- amine 405.1 244

351 (R)-N-(4-((3-methoxy- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-5-(5-methyl- 1H-pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 422.1 245

352 (R)-N-(4-((2-methyl- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-6-(pyridin- 4-yl)benzo[d]thiazol-2- amine 402.1 246

353 (S)-N-(4-((2-methyl- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-5-(pyridin- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 403.1 247

354 (S)-N-(4-((3-methoxy- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-6-(pyridin- 4-yl)benzo[d]thiazol-2- amine 418.1 248

355 (R)-N-(4-((3-methoxy- pyrrolidin-1-yl)methyl)- pyridin-2-yl)-6-(pyridin- 4-yl)benzo[d]thiazol-2- amine 418.1 249

356 N-(4-((cyclopentyloxy)- methyl)pyridin-2-yl)-6- (1H-pyrazol-4-yl)benzo- [d]thiazol-2-amine 392.1 250

357 6-(1H-pyrazol-4-yl)-N- (4-(((tetrahydro-2H- pyran-4-yl)oxy)methyl)- pyridin-2-yl)benzo[d]- thiazol-2-amine 408.1 251

358 (S)-5-(5-methyl-1H- pyrazol-4-yl)-N-(4-((2- methylpyrrolidin-1- yl)methyl)pyridin-2- yl)thiazolo[5,4-b]- pyridin-2-amine 406.1 252

359 N-(4-(isopropoxymethyl)- pyridin-2-yl)-6-(5-methyl- 1H-pyrazol-4-yl)benzo- [d]thiazol-2-amine 380.1 253

360 N-(4-(4-(2-isopropoxy- ethyl)piperazin-1-yl)- pyridin-2-yl)-5-(1H- pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 465.2 254

361 5-(pyridin-4-yl)-N-(4-(4- (3,3,3-trifluoropropyl)- piperazin-1-yl)pyridin- 2-yl)thiazolo[5,4-b]- pyridin-2-amine 486.2 255

362 N-(4-(4-(2-isopropoxy- ethyl)piperazin-1- yl)pyridin-2-yl)-5-(5- methyl-1H-pyrazol-4- yl)thiazolo[5,4-b]- pyridin-2-amine 479.2 256

363 5-(5-methyl-1H-pyrazol- 4-yl)-N-(4-(4-(3,3,3- trifluoropropyl)piperazin- 1-yl)pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 489.0 257

364 N-(4-(4-(2-isopropoxy- ethyl)piperazin-1-yl)- pyridin-2-yl)-5-(pyridin- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 476.2 258

365 N-(4-(4-(1-methoxy- propan-2-yl)piperazin-1- yl)pyridin-2-yl)-5-(5- methyl-1H-pyrazol-4- yl)thiazolo[5,4-b]pyridin- 2-amine 465.1 259

366 6-(5-methyl-1H-pyrazol- 4-yl)-N-(4-(4-(3,3,3- trifluoropropyl)piperazin- 1-yl)pyridin-2-yl)benzo- [d]thiazol-2-amine 488.1 260

367 (S)-N-(4-(3-methyl-4- (methylsulfonyl)piperazin- 1-yl)pyridin-2-yl)-5- (pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-amine 482.1 261

368 N-(4-(4-(2-isopropoxy- ethyl)piperazin-1-yl)- pyridin-2-yl)-6-(1H- pyrazol-4-yl)benzo[d]- thiazol-2-amine 464.1 262

369 N-(4-(4-(isopropyl- sulfonyl)piperazin-1- yl)pyridin-2-yl)-5-(5- methyl-1H-pyrazol-4- yl)thiazolo[5,4-b]- pyridin-2-amine 499.2 263

370 2,2-dimethyl-1-(4-(2- ((5-(5-methyl-1H- pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-yl)- amino)pyridin-4-yl)- piperazin-1-yl)propan- 1-one 477.1 264

371 N-(4-(4-(2-isopropoxy- ethyl)piperazin-1-yl)- pyridin-2-yl)-6-(pyridin- 4-yl)benzo[d]thiazol-2- amine 475.2 265

372 6-(pyridin-4-yl)-N-(4-(4- (3,3,3-trifluoropropyl)- piperazin-1-yl)pyridin- 2-yl)benzo[d]thiazol-2- amine 485.1 266

373 (S)-2-methoxy-1-(2- methyl-4-(2-((5-(5- methyl-1H-pyrazol-4- yl)thiazolo[5,4-b]pyridin- 2-yl)amino)pyridin-4- yl)piperazin-1-yl)- ethanone 479.2 267

374 (S)-2-methoxy-1-(2- methyl-4-(2-((5- (pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-yl)- amino)pyridin-4-yl)- piperazin-1-yl)ethanone 476.1 268

375 (S)-5-(5-methyl-1H- pyrazol-4-yl)-N-(4-(3- methyl-4-(methyl- sulfonyl)piperazin-1- yl)pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 485 269

376 (R)-N-(4-(4-(2- methoxyethyl)-3- methylpiperazin-1-yl)- pyridin-2-yl)-5-(5- methyl-1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 465.1 270

377 6-(1H-pyrazol-4-yl)-N- (4-(4-(3,3,3-trifluoro- propyl)piperazin-1-yl)- pyridin-2-yl)benzo[d]- thiazol-2-amine 474.1 271

378 N-(4-(4-(2-isopropoxy- ethyl)piperazin-1-yl)- pyridin-2-yl)-6-(5- methyl-1H-pyrazol-4- yl)benzo[d]thiazol-2- amine 478.2 272

379 (R)-2-methoxy-1-(3- methyl-4-(2-((5-(5- methyl-1H-pyrazol-4- yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)piperazin- 1-yl)ethanone 479.2 273

380 (R)-N-(4-(2-methyl-4- (methylsulfonyl)piperazin- 1-yl)pyridin-2-yl)-5- (pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-amine 482.1 274

381 (S)-N-(4-(4-(2-methoxy- ethyl)-3-methylpiperazin- 1-yl)pyridin-2-yl)-5-(5- methyl-1H-pyrazol-4- yl)thiazolo[5,4-b]pyridin- 2-amine 465.2 275

382 (S)-N-(4-(4-(2-methoxy- ethyl)-3-methylpiperazin- 1-yl)pyridin-2-yl)-5- (pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-amine 462.1 276

383 (R)-N-(4-(4-(2-methoxy- ethyl)-3-methylpiperazin- 1-yl)pyridin-2-yl)-5- (pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-amine 462.1 277

384 1-(4-(2-((5-(1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)piperazin- 1-yl)-2-isopropoxy- ethanone 479.1 278

385 2-isopropoxy-1-(4-(2-((5- (5-methyl-1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)piperazin- 1-yl)ethanone 493.1 279

386 2-isopropoxy-1-(4-(2- ((5-(pyridin-4-yl)- thiazolo[5,4-b]pyridin- 2-yl)amino)pyridin-4- yl)piperazin-1-yl)- ethanone 490.1 280

387 (R)-2-methoxy-1-(3- methyl-4-(2-((5-(pyridin- 4-yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)piperazin- 1-yl)ethanone 476.1 281

388 (R)-5-(5-methyl-1H- pyrazol-4-yl)-N-(4-(2- methyl-4-(methyl- sulfonyl)piperazin-1- yl)pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 485.1 282

389 (R)-2-methoxy-1-(2- methyl-4-(2-((5-(5- methyl-1H-pyrazol- 4-yl)thiazolo[5,4-b]- pyridin-2-yl)amino)- pyridin-4-yl)piperazin- 1-yl)ethanone 479.2 283

390 (R)-2-methoxy-1-(2- methyl-4-(2-((5- (pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-yl)- amino)pyridin-4-yl)- piperazin-1-yl)ethanone 476.1 284

391 2-methoxy-1-(4-(2-((5- (2-methylpyridin-4-yl)- thiazolo[5,4-b]pyridin- 2-yl)amino)pyridin-4- yl)piperazin-1-yl)- ethanone 476.1 285

392 (R)-N-(4-(3-methyl-4- (methylsulfonyl)piperazin- 1-yl)pyridin-2-yl)-5- (pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-amine 482.0 286

393 (S)-5-(5-methyl-1H- pyrazol-4-yl)-N-(4-(3- methyl-4-(methyl- sulfonyl)piperazin-1- yl)pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 485.1 287

394 N-(4-(4-(2-methoxy- ethyl)piperazin-1-yl)- pyridin-2-yl)-5-(2- methylpyridin-4-yl)- thiazolo[5,4-b]pyridin- 2-amine 462.1 288

395 5-(2-methylpyridin-4- yl)-N-(4-(4-(methyl- sulfonyl)piperazin-1- yl)pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 482.0 289

396 2-methoxy-1-(4-(2-((5- (pyridazin-4-yl)thiazolo- [5,4-b]pyridin-2-yl)- amino)pyridin-4-yl)- piperazin-1-yl)ethanone 463.0 290

397 N-(4-(4-(methylsulfonyl)- piperazin-1-yl)pyridin-2- yl)-5-(pyridazin-4-yl)- thiazolo[5,4-b]pyridin- 2-amine 469.1 291

398 (S)-N-(4-(4-(2-methoxy- ethyl)-2-methylpiperazin- 1-yl)pyridin-2-yl)-5- (pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-amine 462.1 292

399 (S)-N-(4-(4-(2-methoxy- ethyl)-2-methylpiperazin- 1-yl)pyridin-2-yl)-5-(5- methyl-1H-pyrazol-4- yl)thiazolo[5,4-b]pyridin- 2-amine 465.1 293

400 (R)-N-(4-(4-(2-methoxy- ethyl)-2-methylpiperazin- 1-yl)pyridin-2-yl)-5- (pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-amine 462.1 294

401 N-(4-(4-(2-methoxy- ethyl)piperidin-1-yl)- pyridin-2-yl)-5-(pyridin- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 447.1 295

402 N-(4-(4-(2-methoxy- ethyl)piperidin-1-yl)- pyridin-2-yl)-5-(1H- pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 436.1 296

403 N⁴-(2-methoxyethyl)-N⁴- methyl-N²-5-(pyridin-4- yl)thiazolo[5,4-b]pyridin- 2-yl)pyridine-2,4-diamine 393.1 297

404 N-(4-((1S,4S)-5-(2- methoxyethyl)-2,5- diazabicyclo[2.2.1]- heptan-2-yl)pyridin- 2-yl)-5-(5-methyl-1H- pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-amine 463.1 298

405 5-(5-methyl-1H-pyrazol- 4-yl)-N-(4-(4-(pyridin-2- yl)piperazin-1-yl)pyridin- 2-yl)thiazolo[5,4-b]- pyridin-2-amine 470.2 299

406 N-(4-(4-(2-methoxy- ethyl)piperazin-1-yl)- pyridin-2-yl)-5- (pyrimidin-5-yl)thiazolo- [5,4-b]pyridin-2-amine 449.1 300

407 N-(4-(4-(2-methoxy- ethyl)piperidin-1-yl)- pyridin-2-yl)-5-(5- methyl-1H-pyrazol-4- yl)thiazolo[5,4-b]- pyridin-2-amine 450.1 301

408 N⁴-(2-methoxyethyl)-N⁴- methyl-N²-(5-5-methyl- 1H-pyrazol-4-yl)thiazolo- [5,4-b]pyridin-2-yl)- pyridine-2,4-diamine 396.1 302

409 N²-(5-(1H-pyrazol-4-yl)- thiazolo[5,4-b]pyridin-2- yl)-N⁴-(2-methoxyethyl)- N⁴-methylpyridine-2,4- diamine 382.0 303

410 (R)-N-(4-(4-(2-methoxy- ethyl)-2-methylpiperazin- 1-yl)pyridin-2-yl)-5-(5- methyl-1H-pyrazol-4- yl)thiazolo[5,4-b]pyridin- 2-amine 465.2 304

411 (S)-N-(4-(2-methyl-4- (methylsulfonyl)piperazin- 1-yl)pyridin-2-yl)-5- (pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-amine 482.0 305

412 (S)-5-(5-methyl-1H- pyrazol-4-yl)-N-(4-(2- methyl-4-(methyl- sulfonyl)piperazin-1- yl)pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 485.1 306

413 2-((4-morpholinopyridin- 2-yl)amino)benzo[d]- thiazole-6-carbonitrile 337.9 307

414 2-((4-(pyrrolidine-1- carbonyl)pyridin-2- yl)amino)benzo[d]- thiazole-6-carbonitrile 349.9 308

415 (2-((5-bromothiazolo- [5,4-b]pyridin-2-yl)- amino)pyridin-4-yl)- (pyrrolidin-1-yl)- methanone 403.78 309

416 N-(4-(cyclopentyloxy)- pyridin-2-yl)-5-(pyridin- 4-yl)thiazolo[5,4-b]- pyridin-2-amine 390.0 310

417 N-(4-(cyclopentyloxy)- pyridin-2-yl)-5-(5-methyl- 1H-pyrazol-4-yl)thiazolo- [5,4-b]-pyridin-2-amine 393.1 311

418 5-ethynyl-N-(4- (pyrrolidin-1-ylmethyl)- pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 336.0 312

419 N-(4-(4-(2-methoxy- ethyl)piperazin-1-yl)- pyridin-2-yl)-6-methyl- benzo[d]thiazol-2-amine 384.02 313

420 2-((4,6-dimethylpyridin- 2-yl)amino)benzo[d]- thiazole-6-carbonitrile 281.02 314

421 2-((4-(1,4-dioxa-8- azaspiro[4.5]decan-8- yl)pyridin-2-yl)amino)- benzo[d]thiazole-6- carbonitrile 394.0 315

422 2-((4-(4-oxopiperidin- 1-yl)pyridin-2-yl)- amino)benzo[d]thiazole- 6-carbonitrile 349.97 316

423 N-(4-(4-(2-methoxyethyl)- piperazin-1-yl)pyridin-2- yl)[1,3]dioxolo[4′,5′:4,5]- benzo[1,2-d]thiazol-6- amine 415.92 317

424 6-isopropyl-N-(4-(4-(2- methoxyethyl)piperazin-1- yl)pyridin-2-yl)benzo[d]- thiazol-2-amine 412.01 318

425 2-((4-(4-hydroxy- piperidin-1-yl)pyridin- 2-yl)amino)benzo[d]- thiazole-6-carbonitrile 351.92 319

426 2-((4-(2-methoxyethoxy)- pyridin-2-yl)amino)benzo- [d]thiazole-6-carbonitrile 326.91 320

427 2-((4-isobutoxypyridin- 2-yl)amino)benzo[d]- thiazole-6-carbonitrile 324.96 321

428 N-(4-(pyrrolidin-1- ylmethyl)pyridin-2-yl)- 5-vinylthiazolo[5,4-b]- pyridin-2-amine 322

429 5-ethyl-N-(4-(pyrrolidin- 1-ylmethyl)pyridin-2- yl)thiazolo[5,4-b]pyridin- 2-amine 323

430 5-(pyridin-4-yl)-N-(4- ((tetrahydro-2H-pyran- 4-yl)oxy)pyridin-2-yl)- thiazolo[5,4-b]pyridin- 2-amine 406.1 324

431 N-(4-ethylpyridin-2-yl)- 6-(1H-imidazol-4-yl)- benzo[d]thiazol-2-amine 321.92 325

432 1-(4-(2-((5-ethynyl- thiazolo[5,4-b]pyridin- 2-yl)amino)pyridin-4- yl)piperazin-1-yl)-2- methoxyethanone 409.0 326

433 4-(2-((5-(pyridin-4-yl)- thiazolo[5,4-b]pyridin- 2-yl)amino)pyridin-4- yl)morpholin-3-one 405.1 327

434 2-((4-ethylpyridin-2- yl)amino)benzo[d]- thiazole-6-carbonitrile 280.95 328

435 1,1-dimethyl-3-(2-((5- (pyridin-4-yl)thiazolo- [5,4-b]pyridin-2-yl)- amino)pyridin-4-yl)urea 392.1 329

436 5-(5-methyl-1H-pyrazol- 4-yl)-N-(4-(4-(tetrahydro- 2H-pyran-4-yl)piperazin- 1-yl)pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 477.1 330

437 Methyl (2-((5-(pyridin-4- yl)thiazolo[5,4-b]pyridin- 2-yl)amino)pyridin-4- yl)carbamate 379.1 331

438 2-((4-(hydroxymethyl)- pyridin-2-yl)amino)- benzo[d]thiazole-6- carbonitrile 283.0 332

439 5-cyclopropyl-N-(4- (pyrrolidin-1-ylmethyl)- pyridin-2-yl)thiazolo- [5,4-b]pyridin-2-amine 352.1

Example 333 Synthesis of N-(4-ethylpyridin-2-yl)-6-(oxazol-5-yl)benzo [d]thiazol-2-amine (Compound 501, Structure 4 in Scheme IL R¹=ethyl, R⁴=5-oxazolyl)

A mixture of 4-ethylpyridin-2-amine (100 mg, 0.821 mmol) and bis(1-benzotriazolyl)methanethione (250 mg, 0.891 mmol) were dissolved in 5 mL of anhydrous N,N-dimethylacetamide. The solution was stirred at room temperature for 1 hour. 4-(Oxazol-5-yl)aniline (130 mg, 0.821 mmol) was the added and the solution stirred at 50° C. for an additional hour. Water (15 mL) was then added and the resulting precipitate collected by vacuum filtration and dried under vacuum. The resulting tan powder was used without further purification. MS calculated for C₁₇H₁₆N₄OS: 325.1045; [M+H]⁺, found: 324.89.

1-(4-Ethylpyridin-2-yl)-3-(4-(oxazol-5-yl)phenyl)thiourea (0.27 g, 0.8 mmol) was dissolved in 5 mL of acetic acid. Benzyltrimethylammonium tribromide (320 mg, 0.821 mmol) was then added directly. The mixture was stirred at 50° C. for 1 hour. The mixture was cooled to 0° C. and diluted with 15 mL of water. The resulting solution was then made basic through addition of solid KOH pellets. The resulting precipitate was collected by vacuum filtration, washed with water and dried under vacuum to afford the crude product as a tan solid. A portion of the solid was purified by rp-HPLC affording 0.6 mg of N-(4-ethylpyridin-2-yl)-6-(oxazol-5-yl)benzo[d]thiazol-2-amine 501 as a yellow solid. MS calculated for C₁₇H₁₄N₄OS: 323.0888; [M+H]+, found: 322.93. ¹H-NMR (400 MHz, MeOD) 8.25-8.23 (m, 2H), 8.17 (s, 1H), 7.75 (d, J=8.4, 1H), 7.66 (d, J=8.4, 1H) 7.50 (s, 1H), 6.97 (s, 1H), 6.88 (d, J=8.4, 1H), 2.68 (q, J=7.7, 2H), 1.28 (t, J=7.7, 3H).

Example 334 Synthesis of 6-(1H-pyrazol-4-yl)-N-(4-(pyrrolidin-1-ylmethyl)pyridin-2-yl)imidazo[1,2-a]pyridin-2-amine (Compound 493, structure 10 in Scheme III, R¹=CH₂—N-pyrrolidinyl, R⁴=4-pyrazolyl)

To a solution of 6-bromoimidazo[1,2-a]pyridin-2-amine (200 mg; 0.94 mmol) in dry THF (4 mL) was added NaH (90 mg; 3.76 mmol) in portions at 0° C. The reaction mixture was stirred at r.t. for half an hour. Then 2-chloro-4-(pyrrolidin-1-ylmethyl)pyridine (222 mg, 1.1 mmol) was added. The mixture was heated to 120° C. for 24 hrs. The mixture was quenched by addition of H₂O (20 mL) slowly at 0° C., extracted with DCM (30 mL×3). The combined organic phases were concentrated under reduced pressure and purified by column chromatography on silica (DCM:MeOH=15:1) to obtain 6-bromo-N-(4-(pyrrolidin-1-ylmethyl)pyridin-2-yl)imidazo[1,2-a]pyridin-2-amine (110 mg, yield 80%) as a brown solid.

To a solution of 6-bromo-N-(4-(pyrrolidin-1-ylmethyl)pyridin-2-yl)imidazo[1,2-a]pyridin-2-amine (50 mg, 0.13 mmol) in mixed dioxane/H₂O (2 mL/0.5 mL) was added the pinacol boronate ester (59.2 mg, 0.2 mmol), K₂CO₃ (55.6 mg, 0.4 mmol) and Pd(dppf)Cl₂ (10.8 mg, 0.013 mmol) under nitrogen atmosphere. The mixture reacted under microwave condition at 140° C. for 2 hrs. After cooling, the solvent was removed under reduced pressure, and the residue was purified by prep-TLC to afford 6-(1H-pyrazol-4-yl)-N-(4-(pyrrolidin-1-ylmethyl)pyridin-2-yl)imidazo[1,2-a]pyridin-2-amine 493 (8.5 mg, yield 17.7%). ¹H NMR (400 MHz MeOD) δ 8.93 (s, 1H), 8.47-8.45 (d, J=5.2, 1H), 8.12 (s, 2H), 8.06-8.03 (dd, J=9.2, 1H), 7.85-7.82 (dd, J=9.6, 1H), 7.14-7.11 (m, 2H), 4.43 (s, 2H), 3.55-3.30 (m, 4H), 2.14 (s, 4H).

Examples 335-352

Compounds 484-502 were prepared in a similar fashion as described in Examples 333-334 and their structures, names, and found molecular mass ion numbers are summarized in Table 2 (Example: E.g.; Compound: Cmpd).

TABLE 2 E.g. Structure Cmpd Name [M + H]⁺ 335

484 2-((4-(hydoxymethyl)pyridin-2- yl)amino)imidazo[1,2-a]pyridine-6- carbonitrile 336

485 (S)-tert-butyl 3-(2-((6- cyanoimidazo[1,2-a]pyridin-2- yl)amino)isonicotinamido)pyrrolidine- 1-carboxylale 448.2 337

486 (S)-2-((6-cyanoimidazo[1,2- a]pyridin-2-yl)amino)-N-(pyrrolidin-3- yl)isonicotinamide 348.2 338

487 2-((4-(pyrrolidin-1-ylmethyl)pyridin-2- yl)amino)imidazo[1,2-a]pyridine-6- carbonitrile 319.2 339

488 6-(pyridin-3-yl)-N-(4-(pyrrolidin-1- ylmethyl)pyridin-2-yl)imidazo[1,2- a]pyridin-2-amine 371.1 340

489 1-(4-((2-((6-(pyridin-4-yl)imidazo[1,2- a]pyridin-2-yl)amino)pyridin-4- yl)methyl)piperazin-1-yl)ethanone 428.1 341

490 1-(4-((2-((6-(pyridin-3-yl)imidazo[1,2- a]pyridin-2-yl)amino)pyridin-4- yl)methyl)piperazin-1-yl)ethanone 428.1 342

491 (2-((6-(pyridin-4-yl)imidazo[1,2- a]pyridin-2-yl)amino)pyridin-4- yl)methanol 318.1 343

492 N-(4-(piperazin-1-ylmethyl)pyridin-2- yl)-6-(pyridin-4-yl)imidazo[1,2- a]pyridin-2-amine 386.1 345

494 1-(4-((2-((6-(1H-pyrazol-4- yl)imidazo[1,2-a]pyridin-2- yl)amino)pyridin-4- yl)methyl)piperazin-1-yl)ethanone 417.7 346

495 N-(4-(piperazin-1-ylmethyl)pyridin-2- yl)-6-(1H-pyrazol-4-yl)imidazo[1,2- a]pyridin-2-amine 375.1 347

496 (2-((6-(1H-pyrazol-4-yl)imidazo[1,2- a]pyridin-2-yl)amino)pyridin-4- yl)methanol 307.1 348

497 N-(4-(4-(methylsulfonyl)piperazin-1- yl)pyridin-2-yl)-6-(pyridin-4- yl)imidazo[1,2-a]pyridin-2-amine 450.1 349

498 2-methoxy-1-(4-(2-((6-(pyridin-4- yl)imidazo[1,2-a]pyridin-2- yl)amino)pyridin-4-yl)piperazin-1- yl)ethanone 444.2 350

499 N-(4-(4-(methylsulfonyl)piperazin-1- yl)pyridin-2-yl)-6-(1H-pyrazol-4- yl)imidazo[1,2-a]pyridin-2-amine 439.1 351

500 6-(5-methyl-1H-pyrazol-4-yl)-N-(4- (4-(methylsulfonyl)piperazin-1- yl)pyridin-2-yl)imidazo[1,2-a]pyridin- 2-amine 453.1 352

502 (2-((6-(pyridin-3-yl)imidazo[1,2- a]pyridin-2-yl)amino)pyridin-4- yl)methanol 318.0

Examples 353-430

Compounds 503-580 were prepared in a similar fashion as described in Examples 1-2 and 333-334, and their structures and names are summarized in Table 3 (Example: E.g.; Compound: Cmpd).

TABLE 3 E.g. Structure Cmpd Name 353

503 3-((5-trifluoromethylbenzo[d]thiazol-2- yl)amino)-N-(pyrrolidin-3-yl)benzamide 354

504 3-((6-nitrobenzo[d]thiazol-2-yl)amino)-N- (pyrrolidin-3-yl)benzamide 355

505 2-(3-(pyrrolidin-1-ylmethyl)phenylamino)- 6-cyanobenzo[d]thiazole 356

506 (R)-2-(benzo[d]thiazol-2-ylamino)-4-(3- hydroxypropylamino)-6-(pyrrolidin-3- ylamino)-1,3,5-triazine 357

507 (R)-2-(benzo[d]thiazol-2-ylamino)-4-(2- hydroxyethylamino)-6-(pyrrolidin-3- ylamino)-1,3,5-triazine 358

508 (R)-2-(benzo[d]thiazol-2-ylamino)-4- methylamino-6-(pyrrolidin-3-ylamino)- 1,3,5-triazine 359

509 2-((6-fluorobenzo[d]thiazol-2-yl)amino)-N- (pyrrolidin-3-yl)isonicotinamide 360

510 2-((6-hydroxybenzo[d]thiazol-2-yl)amino)- N-(pyrrolidin-3-yl)isonicotinamide 361

511 2-((6-trifluoromethylbenzo[d]thiazol-2- yl)amino)-N-(pyrrolidin-3- yl)isonicolinamide 362

512 2-((6-trifluoromethoxybenzo[d]thiazol-2- yl)amino)-N-(pyrrolidin-3- yl)isonicotinamide 363

513 2-((6-methoxybenzo[d]thiazol-2-yl)amino)- 6-methyl-N-(pyrrolidin-3- yl)isonicolinamide 364

514 2-((6-hydroxymethylbenzo[d]thiazol-2- yl)amino)-N-(pyrrolidin-3- yl)isonicolinamide 365

515 (R)-2-((6-methoxybenzo[d]thiazol-2- yl)amino)-N-(pyrrolidin-3- yl)isonicotinamide 366

516 (S)-2-((6-phenylbenzo[d]thiazol-2- yl)amino)-N-(pyrrolidin-3- yl)isonicolinamide 367

517 (S)-2-((6-methylsulfonylbenzo[d]thiazol-2- yl)amino)-N-(pyrrolidin-3- yl)isonicotinamide 368

518 2-((quinolin-2-yl)amino)-N-(pyrrolidin-3- yl)isonicotinamide 369

519 (S)-2-((6-cyanoquinolin-2-yl)amino)-N- (pyrrolidin-3-yl)isonicotinamide 370

520 (R)-2-((6-N-methyl-N-(2- methoxyethyl)benzo[d]thiazol-2-yl)amino)- N-(pyrrolidin-3-yl)isonicotinamide 371

521 (R)-2-((6-morpholinobenzo[d]thiazol-2- yl)amino)-N-(pyrrolidin-3- yl)isonicotinamide 372

522 2-((6-(1H-pyrazol-4-yl)benzo[d]thiazol-2- yl)amino)-N-(pyrrolidin-3-yl)-4- pyrimidinecarboxamide 373

523 5-((6-(1H-pyrazol-4-yl)benzo[d]thiazol-2- yl)amino)-N-(pyrrolidin-3-yl)nicotinamide 374

524 2-((6-bromobenzo[d]thiazol-2-yl)amino)-4- (N-methyl-N-(2- methoxyethyl)aminomethyl)pyridine 375

525 2-((6-bromobenzo[d]thiazol-2-yl)amino)-4- (morpholinomethyl)pyridine 376

526 2-((6-bromobenzo[d]thiazol-2-yl)amino)-4- (4-methylpiperazinomethyl)pyridine 377

527 2-((6-(3,5-dimethylisoxazol-4- yl)benzo[d]thiazol-2-yl)amino)-4- (pyrrolidin-1-ylmethyl)pyridine 378

528 2-((6-(3-chloropyridin-4-yl)benzo[d]thiazol- 2-yl)amino)-4-(pyrrolidin-1- ylmethyl)pyridine 379

529 2-((6-(3-methoxyphenyl)benzo[d]thiazol-2- yl)amino)-4-(pyrrolidin-1-ylmethyl)pyridine 380

530 2-((6-(3,5-dimethylpyrazol-4- yl)benzo[d]thiazol-2-yl)amino)-4- (pyrrolidin-1-ylmethyl)pyridine 381

531 2-((6-(2,2,2-trifluoroethyl)benzo[d]thiazol- 2-yl)amino)-4-(pyrrolidin-1- ylmethyl)pyridine 382

532 2-((6-(2,2,2-trifluoroethyl)benzo[d]thiazol- 2-yl)amino)-4-(4-methoxyacetylpiperazin- 1-yl)pyridine 383

533 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-4- (1-cyanoacetylpiperidin-4-yl)pyridine 384

534 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-4- (1-cyanomethylpiperidin-4-yl)pyridine 385

535 2-((6-(imidazol-1-yl)benzo[d]thiazol-2- yl)amino)-4-hydroxymethylpyridine 386

536 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-4- (1-(4-methoxyphenyl)acetylpiperidin-4- yl)pyridine 387

537 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-4- (1-(3-cyclopentyl-1-oxopropyl)piperidin-4- yl)pyridine 388

538 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-4- (1-(1-oxopropyl)piperidin-4-yl)pyridine 389

539 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-4- (1-cyclopropylcarbonylpiperidin-4- yl)pyridine 390

540 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-4- (1-trifluoroacetylpiperidin-4-yl)pyridine 391

541 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-4- (1-ethylsulfonylpiperidin-4-yl)pyridine 392

542 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-4- (1-methoxyacetylpiperidin-4-yl)pyridine 393

543 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-4- (piperidin-4-yl)pyridine 394

544 2-((6-(pyrazol-1-yl)benzo[d]thiazol-2- yl)amino)-4-(pyrrolidin-1-ylmethyl)pyridine 395

545 2-((6-(3-fluoropyridin-4-yl)benzo[d]thiazol- 2-yl)amino)-4-(pyrrolidin-1- ylmethyl)pyridine 396

546 2-((6-(pyrazol-4-yl)benzo[d]thiazol-2- yl)amino)-4-hydroxymethyl-3- fluoropyridine 397

547 2-((6-bromobenzo[d]thiazol-2-yl)amino)-4- hydroxymethylpyridine 398

548 2-((6-bromobenzo[d]thiazol-2-yl)amino)-4- ethylpyridine 399

549 5-((6-cyanobenzo[d]thiazol-2-yl)amino)-3- methylisoxazole 400

550 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-5- methyl-4-phenylthiazole 401

551 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-5- (4-methoxyphenyl)-1,3,4-thiadiazol 402

552 2-((6-(oxazol-5-yl)benzo[d]thiazol-2- yl)amino)-4-(4-(2-methoxyethyl)piperazin- 1-yl)pyridine 403

553 2-((6-(2-methyl-1,3,4-oxadiazol-5- yl)benzo[d]thiazol-2-yl)amino)-4- ethylpyridine 404

554 2-(3-hydroxymethylphenyl)amino-6- cyanobenzo[d]thiazole 405

555 2-((6-(1,3,4-oxadiazol-2- yl)benzo[d]thiazol-2-yl)amino)-4- ethylpyridine 406

556 2-((6-(1,3,4-thiadiazol-2- yl)benzo[d]thiazol-2-yl)amino)-4- ethylpyridine 407

557 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-4- (pyrrolidin-1-ylmethyl) pyridine 408

558 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-4- (pyrrolidin-1-ylthiocarbonyl) pyridine 409

559 2-(3,5-dimethoxymethylphenyl)amino-6- cyanobenzo[d]thiazole 410

560 4-((6-(1H-pyrazol-4-yl)benzo[d]thiazol-2- yl)amino)-N-(pyrrolidin-3-yl)-6- pyrimidinecarboxamide 411

561 5-(5-methyl-1H-pyrazol-4-yl)-2-(4- hydroxymethylpyridin-2- ylamino)thiazolo[5,4-b]pyridine 412

562 5-(pyridin-4-yl)-2-(5- isopropyloxymethylisoxazol-3- ylamino)thiazolo[5,4-b]pyridine 413

563 5-(1H-pyrazol-4-yl)-2-(3-(4- methoxyacetylpiperazin-1- ylphenyl)amino)thiazolo[5,4-b]pyridine 414

564 5-ethyl-2-(3-(4-methoxyacetylpiperazin-1- ylphenyl)amino)thiazolo[5,4-b]pyridine 415

565 5-ethyl-2-(4-(1-methoxyacetylpiperidin-4- ylpyridin-2-yl)amino)thiazolo[5,4- b]pyridine 416

566 5-ethyl-2-(4-(pyrrolidon-1-ylpyridin-2- yl)amino)thiazolo[5,4-b]pyridine 417

567 5-(pyridine-4-yl)-2-(4-(3-dimethylamino-3- oxopropyl)pyridin-2-yl)amino)thiazolo[5,4- b]pyridine 418

568 5-(1-methylimidazol-5-yl)-2-(4-(4- methoxyacetylpiperazin-1-ylpyridin-2- yl)amino)thiazolo[5,4-b]pyridine 419

569 5-(pyrimidin-4-yl)-2-(4-(4- methoxyacetylpiperazin-1-ylpyridin-2- yl)amino)thiazolo[5,4-b]pyridine 420

570 5-(thiazol-5-yl)-2-(4-(4- methoxyacetylpiperazin-1-ylpyridin-2- yl)amino)thiazolo[5,4-b]pyridine 421

571 5-propyl-2-(4-(4-methoxyacetylpiperazin- 1-ylpyridin-2-yl)amino)thiazolo[5,4- b]pyridine 422

572 5-(1H-pyrazol-4-yl)-2-(2-pyrrolidon-1- ylmethylpyridin-4-yl)amino)thiazolo[5,4- b]pyridine 423

573 5-(pyridin-4-yl)-2-(4-(1-methyl-2- oxopiperidin-4-ylpyridin-2- yl)amino)thiazolo[5,4-b]pyridine 424

574 5-(1-methylimidazol-5-yl)-2-(4-(2- dimethylaminocarbonylethyl)pyridin-2- yl)amino)thiazolo[5,4-b]pyridine 425

575 5-(pyridine-4-yl)-2-(4-(4- methoxyacetylpiperazin-1-ylpyridin-2- yl)amino)oxazolo[5,4-b]pyridine 426

576 2-((6-cyanobenzo[d]thiazol-2-yl)amino)-4- (1-phenylcarbonylpiperidin-4-yl)pyridine 427

577 6-cyano-2-(4-(4-methoxyacetyl-piperazin- 1-yl)pyridin-2-ylamino)imidazo[1,2- a]pyridine 428

578 6-cyano-2-(4-(4-(2- methoxyethyl)piperazin-1-yl)pyridin-2- ylamino)imidazo[1,2-a]pyridine 429

579 6-(1H-pyrazol-4-yl)-2-(4- morpholinopyridin-2-ylamino)imidazo[1,2- a]pyridine 430

580 5-(pyridin-3-yl)-2-(4-(piperazin-1- ylmethylpyridin-2-yl)amino)thiazolo[5,4- d]pyridine

Example 431 Inhibition Assay

The following assay is useful for evaluating test compounds for inhibition of IRAK-1 or IRAK-4 kinase activity. A 96-well polystyrene microtiter plates are coated with neutravidin for IRAK-1 or streptavidin for IRAK-4 (10 mg/mL in PBS, overnight at 4° C.). The coating solution is removed and in 80 μL/well, a kinase reaction mixture is added (for IRAK-1: 20 mM Tris-HCl, pH 7.5, 10 mM MgCl₂, 2 mM EGTA, 1 mM NaF, 0.5 mM benzamidine, 1 mM DTT, 3 μM ATP, 1 mM of biotinylated substrate peptide bio-ARFSRFAGSSPSQSSMVAR, sequence derived from IRAK-1; for IRAK-4: 20 mM Tris-HCl, pH 7.5, 10 mM MgCl₂, 2 mM EGTA, 1 mM NaF, 0.5 mM benzamidine, 1 mM DTT, 10% glycerol, 10 μM ATP, 1 mM of biotinylated substrate peptide bio-RRRVTSPARRS, sequence derived from GFAP).

At 10 μL/well in DMSO test compounds are added covering a final concentration range from 1 nM to 30 mM. Recombinant, full-length IRAK-1 or IRAK-4 enzyme (baculovirus expression system) is added in 10 μL buffer containing 20 mM Tris-HCl, pH 7.5, 2 mM EGTA, 0.5 mM benzamidine, 1 mM DTT, 10 mM MgCl₂, and glycerol 10% (IRAK-4 only) to initiate the kinase reaction. The reaction mixture is incubated at room temperature for 60 min on a shaker. During this incubation the substrate peptide is being phosphorylated by the kinase and gets captured onto the surface of the wells by neutravidin or streptavidin, respectively. The plate is washed 3× with 150 μL distilled water to terminate the reaction and remove components of the reaction mixture. A conventional chemiluminescent ELISA detection technique is initiated by adding 100 μL/well primary antibody (monoclonal antibody YC10, generated to recognize the phosphorylated epitope in the substrate peptide; use at 1:20,000 dilution for IRAK-1 and 1:10,000 dilution for IRAK-4) premixed with horseradish peroxidase (HRP) conjugated anti-mouse secondary antibody (commercially available from several sources; use at 1:10,000 dilution) in PBS containing 2% BSA. The solution is incubated at room temperature for 40 min on a shaker, then washed 3× with 150 μL of water. 100 μL 10× diluted SuperSignal HRP substrate (from Pierce) is added and after 5 min incubation the chemiluminescent signal is captured by a Labsystems LuminoSkan luminometer. The point of 50% inhibition of IRAK-1 or IRAK-4 enzyme activity (IC₅₀) is determined. Table 4 summarizes data obtained using an assay substantially similar to the foregoing method (Compound: Cmpd).

TABLE 4 Cmpd EC₅₀ Cmpd EC₅₀ Cmpd EC₅₀ Cmpd EC₅₀ 101 A 110 A 120 A 130 A 137 A 150 A 160 A 170 A 180 A 190 A 200 A 210 A 220 A 230 A 240 A 250 A 260 A 270 A 280 A 290 A 300 A 310 A 320 A 330 A 340 A 350 A 360 A 370 A 380 A 390 A 401 A 410 A 420 A 430 A 439 A 484 B 490 A 500 A 510 B 521 B 530 B 540 A 553 B 560 B 570 A 580 B

It is to be understood that both the foregoing general description and detailed description are exemplary and explanatory only and are not restrictive of the embodiments claimed. In this application, the use of the singular includes the plural unless specifically stated otherwise. In this application, the use of “or” means “and/or” unless stated otherwise. Furthermore, use of the term “including” as well as other forms, such as “includes,” and “included,” is not limiting. The term “comprising” as used herein is synonymous with “including,” “containing,” or “characterized by,” and is inclusive or open-ended and does not exclude additional, unrecited elements or method steps.

All references cited herein, including but not limited to published and unpublished applications, patents, and literature references, are incorporated herein by reference in their entirety and are hereby made a part of this specification. To the extent publications and patents or patent applications incorporated by reference contradict the disclosure contained in the specification, the specification is intended to supersede and/or take precedence over any such contradictory material.

All numbers expressing quantities of ingredients, reaction conditions, and so forth used in the specification are to be understood as being modified in all instances by the term “about.” Accordingly, unless indicated to the contrary, the numerical parameters set forth herein are approximations that may vary depending upon the desired properties sought to be obtained. At the very least, and not as an attempt to limit the application of the doctrine of equivalents to the scope of any claims in any application claiming priority to the present application, each numerical parameter should be construed in light of the number of significant digits and ordinary rounding approaches.

The above description discloses several methods and materials of the present invention. This invention is susceptible to modifications in the methods and materials, as well as alterations in the fabrication methods and equipment. Such modifications will become apparent to those skilled in the art from a consideration of this disclosure or practice of the invention disclosed herein. Consequently, it is not intended that this invention be limited to the specific embodiments disclosed herein, but that it cover all modifications and alternatives coming within the true scope and spirit of the invention. 

What is claimed is:
 1. A method of preparing a compound of Formula (IV):

wherein: X is N; R¹ is selected from hydrogen, halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶, CH₂NR⁷R₈, an optionally substituted C₁-C₆ alkyl, an optionally substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆ alkenyl, an optionally substituted C₁-C₆ alkynyl, CO₂R⁶, CONR⁷R⁸, SO₃R⁶, and SO₂NR⁷R⁸; R², R³ and R⁵ are each hydrogen; R⁴ is selected from halogen, OR⁶, CN, NR⁷R⁸, CH₂OR⁶, an optionally substituted aryl, an optionally substituted three to nine membered heteroaryl, an optionally substituted three to nine membered non-aromatic ring, an optionally substituted three to nine membered carbocycle, an optionally substituted C₁-C₆ alkyl, an optionally substituted C₁-C₆ haloalkyl, an optionally substituted C₁-C₆ alkenyl, an optionally substituted C₁-C₆ alkynyl, CO₂R⁶, SO₃R⁶, SO₂R⁶ and SO₂NR⁷R⁸; each R⁶ is independently selected from an optionally substituted aryl, an optionally substituted three to nine membered heteroaryl, and an optionally substituted three to nine membered non-aromatic ring, each optionally fused with a substituted aryl or a substituted three to nine membered heteroaryl, hydrogen, an optionally substituted C₁-C₁₀ alkyl; each R⁷ and R⁸ is independently selected from an optionally substituted aryl, an optionally substituted three to nine membered heteroaryl, an optionally substituted three to nine membered non-aromatic ring, each optionally fused with a substituted aryl or a substituted three to nine membered heteroaryl, hydrogen, an optionally substituted C₁-C₁₀ alkyl, an optionally substituted C₁-C₁₀ haloalkyl, an optionally substituted C₁-C₁₀ alkenyl, and an optionally substituted C₁-C₁₀ alkynyl, or R⁷ and R⁸ are linked to form an optionally substituted three to nine membered non-aromatic ring; and each optionally substituted group is either unsubstituted or substituted with one or more groups independently selected from alkyl, alkenyl, alkynyl, haloalkyl, heterohaloalkyl, aryl, arylalkyl, three to nine membered heteroaryl, three to nine membered non-aromatic ring, hydroxy, alkoxy, aryloxy, mercapto, alkylthio, arylthio, cyano, halo, —C(═O)R, —C(═S)R, —O(C═O)NR₂, ROC(═O)NH—, —O(C═S)NR₂, ROC(═S)NH—, —(C═O)NR₂, RC(═O)NH—, —S(═O)₂NR, RS(═O)₂NH—, —C(═O)OR, RC(═O)O isocyanato, thiocyanato, isothiocyanato, nitro, silyl, trihalomethanesulfonyl, ═O, ═S, and amino, wherein each R is independently selected from the group consisting of alkyl, cycloalkyl, aryl, three to nine membered heteroaryl, and three to nine membered non-aromatic ring; wherein the method comprises: coupling a 2-halopyridine with an aminoimidazopyridine.
 2. The method of claim 1, wherein the 2-halopyridine has the structure:

and the aminoimidazopyridine has the structure:


3. The method of claim 1, wherein the coupling is performed in the presence of a palladium catalyst and a base.
 4. The method of claim 1, wherein R¹ is NR⁷R⁸, CH₂NR⁷R⁸, or an optionally substituted C₁-C₆ alkyl.
 5. The method of claim 4, wherein R¹ is selected from NR⁷R⁸, or CH₂NR⁷R⁸.
 6. The method of claim 1, wherein R⁴ is selected from an optionally substituted heteroaryl selected from C₃-C₆ cycloalkyl, C₂-C₆ alkenyl, C₂-C₆ alkynyl, and an optionally substituted heteroaryl selected from pyridine, pyrazole, pyridazine, pyrimidine, wherein the heteroaryl is optionally substituted with 1-2 substituents selected from C₁-C₆ alkyl and CN.
 7. The method of claim 1, wherein R⁴ is selected from cyano, triazolyl, oxazolyl, isoxazolyl, imidazoyl, pyridyl, pyrazolyl, pyrimidinyl, pyridazinyl, and C₁-C₆ alkyl.
 8. The method of claim 7, wherein R⁴ is selected from pyridyl, pyrazolyl, pyrimidinyl, and pyridazinyl.
 9. The method of claim 8, wherein R⁴ is selected from pyridyl and pyrazolyl.
 10. The method of claim 9, wherein R⁴ is pyrazolyl.
 11. The method of claim 1, wherein the compound is selected from the group consisting of: 